best way to spend £500?

Right lads, mods to date are milltek non res decat system, 64mm throttle body, and Itg maxogen. Looking to spend about £500, whether it's engine, suspension or brakes. I'm planning on a remap in the summer at rs tuning. So any ideas on what I should get?
 
You're going to get a lot of varied answers from this and the best way for you to decide I would say is where you want to start

Power? Handling? Brakes? Cosmetics?

Start from there.
 
2 piece brake upgrade for me. Looks bette and stops better, 2 benefits lol
 
sweet f.a save your money, for what your going to gain its pointless for day to day driving,if your a trackday slag get some decent tyres/pads other than that nothing