Which do u prefer?
Provided they are the same weight, the difference in play will be negligible. Personally I prefer the 7075 version purely because I love the way 7075 looks, feels and sounds. That shiny, slightly hollow resonance about it is just something that appeals to me.
Grind wise, I think the regular version will be better. It’s all up to you really, just pick a colourway that you like.