If you cannot afford a leeson, either speak to iolo, who are abit cheaper, a uk24 or wait for the ashton 24 to come out. Then that depends on if you want a 26, or 24. If you want a 26 most older geo frame swould be good if you can find a second hand one (pashley etc). Some people used to use dmr sidekicks for trials too which would be a pretty streety option. The justice is also quite nice, especially with a 50 - 70mm stem (although i'll prob get sh*t for sayin that).