I am a cerebral guy who loves solving puzzles.
If you're alluding to the diagnostic process, then I'd say this fits much better with radiology (diagnostic) than anesthesiology. In anesthesiology, you'll already know tons about your patient including various diseases and co-morbidities prior to surgery. You have to in order to make sure they make it through surgery! Not that diagnosis can't happen in the OR, but obviously the diagnostic process is central to radiology in a way that it's not in anesthesiology.
You might also consider pathology. Although pathology arguably faces even bigger challenges (e.g. worse job market, needing to do at least one and often two fellowships).
That is what drew me to IM/cardio, but the inefficient IM rounding just wear me out. Surgery rounds were sweet/efficient.
Personally, I wouldn't give up on IM if it's only or mostly about the rounding. I hate rounding too, but I'd look beyond residency/fellowship, and see what it's like in private practice.
Also I think there's a lot more to consider besides just rounding. For example, one good thing about IM and most IM subspecialties is (generally speaking) you are in better control of when you see patients. Not always, but again I'm just speaking in general and in comparison to anesthesia and radiology. If you're a cardiologist or oncologist, and a patient is very late, it's possible to reschedule.
In anesthesia, if a surgeon is late, or a surgeon wants to do an add-on case, and you're on, then you'll be staying late, working weekends, etc. You have a lot less control over your schedule in this regard.
In radiology, if you're not reading as many as other radiologists, you may be regarded as slow, and so you have to pick up the pace.
Also consider not all "call" is created equal. It's in general much better to take call from home than having in-house call which happens a lot in anesthesiology even as an attending. In IM you may or may not have to come in, even if you're on call, depending on the subspecialty, your group, etc.
Just a couple of other things to consider among many other things.
If I pursue rads, I will be hoping to do vascular and interventional rads, and cardiac anesthesia if I pursue ansthesia.
Again keep in mind other things as well. For instance, interventional rads is hard to match and you'll be working very hard. Similar with cardiac anesthesia, which in addition involves working with (in my experience) some of the most arrogant surgeons on the planet. In anesthesia you have to not mind sometimes being treated like hired help or something along those lines. You're a service to facilitate surgery, which has its pros and cons.
Main worry is rads job market/CRNA issue in anesthesia.
Although these are legitimate concerns, I don't actually think these are the main concerns for each of the specialties. There's too much to type about but again just do a rotation if you haven't already, talk to lots of people at various stages of training and experience, etc.
If you go over to the rads forum, it sounds like the job market may be picking up. You'll still most likely have to do a fellowship at least, whether interventional or something else, but that's probably due less to the job market than the fact that there's so much to learn in radiology. Just make sure you're the type of person who also enjoys reading and reading and then reading some more during residency (which is different than what many procedurally oriented people tend to like doing). Lots of studying involved in radiology. For some that's good, for others that's not. Just make sure you have the personality to get through it.
With anesthesia, the CRNA issue is a problem, and most likely the future will most of the time involve supervising 2 or 3 or more CRNAs at a time rather than doing your own cases, since the ACT model is here to stay. This involves taking on medico-legal risks or liability. If something happens, let's hope your CRNA (s) calls you when you asked them to call you rather than thinking they know best, that they're just as good as you are, etc. But CRNA issues aside, the bigger issue is loss of autonomy and independence. Fewer and fewer private practices. Less money, often more hours. You'll most likely be an employee of a hospital or AMC.
Also hoping to have a research career eventually in either academia or industry.
If you're into research, then radiology is probably better. But you can have a research career in both. Although IM again is good too.
Hope that helps a bit, but again just ask lots of people, do rotations, spend some time on the rads and anesthesia forums, etc. Different people may tell you different things, since we're all limited by our own experiences and perspectives. But you'll find common patterns and trends in every specialty which you can pick up on and follow to see if how it all fits with you and your goals in life. Also know what you enjoy may or may not be what you are good at. But you need to be able to have both to some extent to make it through residency, etc.
Personally I think for many if not most people there are several specialties people could be happy in and excel in. But we all can't be stem cells forever.
🙂