Yes and no. It's not wrong because you should spend the most money on someone who you truly value.
It's wrong because you're valuing the girls more and less by their appearance.
I said it's not wrong because all of those girls aren't the girls you're with and I'm guessing going to end up with but you so it doesn't really matter but when that girl does come you should value her for more than just her beauty.
Why would you date someone you don't enjoy spoiling? I just can't relate. If I ask someone out I'm going to try and do the best I can. I just have a threshold of girls I find attractive and girls I don't find attractive. You're either in one or the other. From there it's about personality so I don't know how I'd consciously spoil one girlfriend more than I would have a previous one.