It's all in the design of the wheel. I think it looks 19s cos of perimeter is well defined and you don't see the inside bank of the wheel if there's any.
If you gonna drop, consider a set with a little more drop on the rear. As you can tell, the rear is abit higher in the Prestige (??). Also, if you drop too much on the front, going over humps the weight of the engine will no doubt bottom-out your fronts. The sound won't be good.