I would definitly take the EMT class. It depends on whos teaching it and to what standard, but it will not be an easy class. Still, I had a great time taking my classes, met some great people, and learned a lot. It will be useful to you even if you never use it professionally. I've been happy to have the training several times while out climbing, biking, etc. It can also teach you how to function under stress, although this depends on how its taught. This was one of the best things I learned from the class, was that I can work under stress, and actualy enjoy it to an extent. Taking an EMT-Basic class eventually led me into where I am today. And, if nothing else, its great trivia to impress your friends and family with!
Enjoy!
dp