I took both the COMLEX and USMLE.
The main advantage of taking the USMLE in addition to the COMLEX is ease of application in the ERAS program. When applying to the allopathic programs that are not AOA approved, you use the ERAS application system. Only the USMLE has automatic score updates built into the system. There is no official way to include the COMLEX scores in your ERAS application. I think our school routinely includes your COMLEX scores as part of the school transcripts, but there is no place on the ERAS application for COMLEX scores.
Also, speed is another factor. As I have not yet graduated, I'm not too well versed in Step III issues. What I have been told is you can you license a little faster throught the USMLE route simply because the USMLE is offered on a year round basis and not just twice a year.
Anyway, my advice is:
If you are only looking at AOA programs and going throught the AOA match - COMLEX only.
If you might/are looking at allopathic programs and plan on using ERAS, consider BOTH COMLEX and USMLE. Just because the USMLE is set up to work more effeciently with the ERAS system.
Additionally, I took the USMLE I and II as kind of a "see if I can pass this crap as well" kind of thing. The exams are different, but probably about the same level of difficulty. I don't see what all the fuss is about.
Really, if the NBOME would drag themselves into the 21st century, life would be simpler. If the COMLEX was offered year round like the USMLE, and the COMLEX could seamlessly fit into the ERAS application like the USMLE, and the COMLEX were offered at testing centers like Silvan learning centers like the USMLE, then MAYBE MOST PLACES WOULD BE WILLING TO ACCEPT THE COMLEX LIKE THEY ACCEPT THE USMLE! But wait, if the COMLEX actually did pull itself kicking and screaming into the 21st century then would the COMLEX lose it's "distinction" of being a major pain in the ass as a two day pencil and paper exam?
Just my loose collection of random thoughts.
Will