So there's a group at my school that does very cool research - pretty much exactly what I'd like to be doing. However, the advisor I'd most likely be working under is known to push his students very hard - long hours, work weekends, seems to have little patience with them etc... This group also has a ton of funding, and none of their students TA. I have the option of working with another guy though, who is in a similar field but doesn't quite do what I was originally looking for. However, he is very laid back, understanding and overall a very cool guy, and yet still seems to put out a good amount of publications. Not sure about his funding situation. Any opinions or advice about this situation? Which would you pick?