Raptor V2's are the way to go.

When you see seasoned pro's flying them because they just "fly so well" then it makes the decision that much easier. They are also cost effective to learn on as parts pricing seems lower than average. Biggest drawback is that "everyone" seems to have one and your machine will look just like 20 other people's Raptors.

The Caliber and Hawk seem to be the next best 2, in-line for "best beginner" copter....

...just my opinion.
(just bought a RapV2 and can attest to it's excellent flight characteristics).....it's popular for a good reason!