I'm planning to buy a trials bike. I currently ride a mountain bike, but there's not much you can do on it. I have a few questions to ask. What is a good trials bike to buy? How do i know which size will fit me best? Although i do think that a 24" would be the best choice, since its not too big or too small. Would it be better to build a bike from scratch? i know it would cost more. And also, who knows what bike Danny Macaskill is using in this video. http://www.youtube.com/watch?v=UbJ1sseQVbY&feature=related I know its a 24", but that's all i know. Links to websites with bikes would be great, and i will choose the best answer. Thank You!