cause that suites his budget.. are you building up a new bike? or are you looking t replace your current brakes? you won't get much for 40-50 quid unless you buy 2nd hand. the obvious choice is maguras at £60 a pop there not cheap, and the stock brake pads are useless so its more like £80 a piece without boosters, or fancy leverblades or braided cables. Otherwise you could go for vees, t-pros don't have vee mounts (unless theres an oldschool model that does?) so you'd need adapters, plus the actual brake, avid gear is ussualy prety good, you get what you pay for so it helps to buy a good set up, SD7 levers are popular with most riders (you can adjust the cable pull ratio, which is cool) sd5 or sd7 calipers are prety good, but the important thing is to buy a decent cable! a shit cable will make an avid ultimate setup feel like tat.