For tires, I purchased the Vittoria Zaffiro. I wanted to buy 700x23 but performance only had 700x25 :/ I will try the bar tape and the saddle. I came back riding on the stock saddle the other day from 2 weeks of no riding and my butt was sore for the rest of the day. Can you guys recommend me some good and cheap wheels? I think that's going to be my next 'big' upgrade.