Hello all! Ive been riding MTB for many years, last year I picked up a P1 and I started getting into "urban" riding (up-down stairs/drop offs/benches). I have left the P1 fairly stock, the only thing I did was put on Mobsters (2.7), a RaceFace bashring and Sun Zu-Zu platforms. Ive gotten good at some of your basic skills and I love riding, one day I saw a group of trials riders across the street from where I work and it got me interested in the sport. I looked into it more and I have decided its the direction I want to go with my riding. My main questions are... 1. Im 6' 140lbs, what size and type of bike would you recomend for a good all-round ride? 2. What tires are good at a reasonable price? Or should I just keep using my Mobsters? 3. Are there reliability issues with multiple speed setups I see on some bikes? 4. Are ZOO's a good buy? Thanks for any input!