First, decide on a few basics - exterior colour etc. Then try to get the newest car with the lowest mileage you can find. If it comes with an OPC warranty so much the better. Don't be dazzled by all those options. If a car has sat-nav, PASM, phone, Bose, TV, Xenons, Climate, turbo wheels etc etc it will have cost the original purchaser many 000's extra. At the end of the day it's still a fine car without all this stuff (and remember all those gadgets can go wrong!). For your budget I'd want the partial leather (almost all have it) and probably 18" or 19" wheels. Everything else is 'nice to have' but not essential - you're paying for buttons to press while you're waiting at the traffic lights. Any exterior bling (exhausts, colour coding splitters etc) can be added later if you want. Sports Chrono provides a revised throttle map (no more power, you just don't have to press the accelerator quite as hard) and a daft stopwatch on the top of the dash for timing your laps. If you have PCM and electric seats I believe you also get individual memory settings (but you'll be struggling to get all this for your £30k if you want a newish car with low miles). To repeat - get the nicest, newest, lowest mileage car you can find, and (almost) ignore the options. I actually ended up ordering a new one (with the few options that I really wanted) as I was so fed-up seeing overpriced used cars with ridiculously high specs for sale. It's a small sports car, not a limo. Warning: other opinions may differ!