If bums in your area are an issue then the smoker's package would be a good idea. However if they're not that large of a concern cheaper options include the chrome cupholder inserts or stainless steel poker-chip cup mentioned in another thread are good options. The chrome insert comes free with the X3 depending on your build date (around $20 if you by them) and the poker chip cup should be less than $10 on ebay, plus they would look great if you have aluminum trim.
Pic is from Momo28 in another thread
