I have BMW x5 3.0i 2002 with stock ugly exhaust.

I am plannign to change only the tips,as don't have enought money to buy whole wxhaust and don't see any benefit to have whole new exhaust on 3.0i

Well anyway? What exhaust tips will look nice on stock mufflers? Will it chnage sound a bit as it will be straight not cuved ?

I saw on ebay ACS exhaust tips for 80$ a piece,what you guys think?