1. Ultima GTR (About £15k excluding VAT and in-house assembly. Yes it's a kitcar, but still fast enough to be a supercar. See this: http://www.youtube.com/watch?v=OuvBLWciOXs Forgive the music.) 2. Lexus LF-A 3. Nissan R390 (that is, if they ever made more than 2 roadgoing cars : / ) 4. Lamborghini Miura 5. Koenisegg CCX to be honest, supercar is a very loose term... as for Sub-50k non-supercars, I'd get: 1. Supra ;3 2. Buick GNX