Hey, As said before they are two completely different bikes 26" and 20". How tall are you? If you think you could handle a 26" then i would try and have ago on someone else's first so you don't waste your money. I used to ride a long 05 pitbull which could of been an extremely nice bike but at the time i didn't have the money or knowledge to make it ride nicer/better. My friend had a 05 python which felt great but it had a Monty 221ti front end which made it quite unique in its ride. More recently my other friend has had the 07 python and didn't get on with that it felt a little out of proportion. Although saying all this i am a 26" rider so i would say the pitbull but don't buy it thinking its a 20" lol. Cheers Adam