I'm an MS4, matched into prelim-med & anesthesia [CA(-1)]. I bought a galaxy tab last year and have used it on regular bases constantly. I had it during all my anesthesia rotations and found it really useful for both reference and actual studying/surfing/email, etc. If only it had a phone. I think the size makes it a more desirable device (7 vs 10.1 inches). Its very portable, light, and has great battery life, android market, nice tablet apps, multitasking, hdmi, dlna, full usb access, itunes wireless sync (DoubleTwist), flash, etc. I bought my galaxy tab the day steve jobs said he has no plans for a smaller iPad. If I were buying today, I'd probably go for the iPad2 because its dual core and I don't see another 7 inch device coming on the market anytime soon (Amazon tab?), and i'm not impressed with the Xoom or GTab 8.9/10.1.
As an aside: I do a lot of reading my galaxy tab, but I think I retain more when I read a book. A book doesn't have angry birds, so its less distracting and more on focus/target. Its so easy with a book to flip back and forth and shove your fingers btw pages and reference ideas. I'm not really happy with some school districts taking away books from kids in favor of an iPad.
Oh yeah, forgot to mention: Don't drop the galaxy tab! I broke one already. Thank god for insurance. I carry mine everywhere, on the wards, to the beach, you name it. It sits in my back pocket.