Cheap, fast or reliable, you can only ever have two out of three I'm afraid
For £6k and being used for a bit of daily/family duties a mk5 golf gti or mk2 Octavia VRS are a good shout, very reliable and that two litre engin, the early one with the cam belt not chain is as good a road engine as it gets, they kept it going long after in the golf r
Both great cars