Hey folks, I've been busy eating and that takes priority over SDN, even when being called out.
The pros and cons of MD/PhD vs PhD or vs MD alone for research are more than adequately beaten to death, er, I mean discussed, in many threads. I don't have any unique insights that haven't been gone over before. With regard to the issue of a published researcher with an MS going MD/PhD vs MD alone, my question would be whether you feel you have gotten adequate research skills to get you started as a post-doc during work in your area during fellowship. If so, and that's entirely possible for many people, then I'm not sure a PhD offers that much to you. There are plenty of ways to "update" your knowledge and skills later in the training process and if you come into fellowship with real skills already established then the PhD will add less. But, this is really up to you and how much you feel that research will be the predominant part of your life after school.
With regard to the salary bit and academic medicine, there will always be a job in almost any field for someone who wants to do academics and patient care. There is no way to fix a salary for academics as it is entirely specialty and subspecialty dependent. Although in some areas the gap between private and academic is 1/3-1/2 that is certainly not always the case. The comparison is much more complex as it relates to clinical time, lifestyle, benefits (such as college tuition benefits), loan repayment, etc. I increasingly see folks choosing to go FROM private practice INTO an academic setting to do teaching and patient care. There are lots of reasons for this, but primarily they revolve around lifestyle, less hassles, enjoyment of teaching and a much smaller salary gap than many think.
Now, I'm hungry again. It's all those steroids I'm taking (Tildy, not her master, has Addison's disease)....