I just bought a 2007 Tomos LX (A55), and have a Technigas Next R exhaust with a 28 tooth rear sprocket. Right now I am going an honest 35. I want to put a kit on it but don't know which one. I was wondering what the disadvantages/advantages of each are. I know, I should search through the forums first, and I have but didn't see anything comparing the two kits.