my 2 cents. When i got my holroyd i got 18:12 on it as standard. Now the harder gear allowed me to get loads of speed and ride fairly streety, but the bike felt like a ton weight! I then went to 18:13 and it instantly felt better, still loads of power, but the bike felt ten times lighter. Now im running 18:16, and im going bigger on every thing, gaps, side hops, pedal ups, bunny hops. Everything just got that slightly easier, and much nicer. Wouldn't recommend any other ratio at all. It is actually perfect.... altho took me a few rides to get used to it.