i dont know about the other ones but my friend just bought a rg321mh and its so nice it sounds great and it has a really fast neck and its just really easy to play . Its also a light guitar too. and for the price it is really amazing. but but the grgs are more of the low end ibanez and the rg 370dx has a floyd rose tremolo. so i would say your best bet would be the RG321MH

i hope that helps