I tend to buy Hasbro's figures as I think they're generally as good (or better) than Henkei, except for a few exceptions where I consider the Henkei version superior.

Megatron and Astrotrain are far superior in the Henkei line.

I also picked up Henkei Hound, Ratchet, Ironhide, Powerglide, Smokescreen, Onslaught(maybe, not 100% sure which one my Onslaught is) and all the legends as I thought they were a little better than the Hasbro versions.