So I've used Fraps, Snagit, Jing and Camtasia
Cut the next bit short I'd recommend Fraps
Fraps Pros - less framerate loss - show's framerate - easy to use, press record and go - easy to work with
Fraps Cons - huge filesize but should be no problem unless you aren't working with much space
Snagit Pros - None it's so bad - Free
Snagit Cons - Very bad to work with - doesn't work properly half the time
Jing Pros - Very easy to work with, free, controllable recording window
Jing Cons - Crashes a lot, hard to work with filesize
Camtasia Pros - comes with own editing software, controllable recording window, easy to use, press record and go
Camtasia Cons - largest loss of framerate out of all these, need to render (can take a very long time on longer videos) to use a third party editor