i went to pick up a bike today, but the guy didnt meet me, i want to get a hlf decent bike, but second hand seems the best option for me, i can go to about £200 what would you guys sudgest? anything in particular i should be looking out for in parts wise, someone told me to go for magura hydrolic brakes ... is it worth it? and do i need on back and front, or disk on from magura rear? thanks