Is the onza rip a good bike to start on? It's about the cheapest i could find and i don't know if trials will become a serious hobby so is it worth the near £400? If i were to buy one is there any common problems i should look out for over time (apart from general wear and tear because i don't have a job at the moment so don't want to be buying a bike that's unreliable and having to shell out to fix it every month or two).