Which one(s) have you trained personally?
I currently have a Deino and a Fraxure in my party, and I mean to evolve them to their final stages.
Which do you think is most useful in battle?
I find myself using Salamence most often.
Which do you think looks the coolest/cutest/most interesting?
Most intimidating? Hydreigon. Coolest? Haxorus.
Which one is your overall favorite?
Haxorus, though Hydreigon is very close behind. Mainly because of Axew.