So the X50 is a good choice then huh? I just gotta make sure that I get a warranty from wherever I choose to buy it. Now I just have to search for the best price. I really want the blue but the $40 extra makes it seem that it might not be worth it. Also, what is this self cal? As in self calibration? I've never heard of it so if someone can shed some light on it for me that would be fantastic. Thanks for the links and the advice.