I don't wanna buy a coilovers (expensive, not legal in Spain and too radical for me) and I thought fit Eibach-Bilstein or TRD sportivo but I've seen this option and seems good quality/price (£428.19 including VAT), what do you think?

http://www.koni.com/53+M5d64198da77.html

http://www.awesome-gti.co.uk/koni/suspension.html

Koni do good stuff. TRD kit comes with the uprated anti roll bars as well which are £300 ish to buy

Thanks for your opinion, it's true I had not considered the anti roll bar but the sportivo remains more much money than koni+ARB

BTW I bought one item in your ebay store and left a message about other