The YuHu V2 is much cheaper and performs better but the Galaxy V2 is more expensive and has a more premium feel. Both are great options but the YuHu V2 is my personal pick. But if you have baby hands like I do get the Dayan Megaminx V2.
Yuhu 100%, as it is less than half the price (you're looking for budget cubes)
At the price of the Galaxy, you could just get a Dayan Megaminx V2 M (Discount on TheCubicle for $23.99