the reason volk or rays engineering wheels (rays is the company they make volks, gramlites etc) are more expensive is because they are forged rims, normally made from magnesium not some cheap alloy like rotas, ultra lites are better wheels if you wanna go cheaper, seen alot of problems and failures with rotas, like the guy in here said his mate needed to get them milled or shaved to fit his calipers, if you buy rays wheels they make them to your spec, you dont have to f**k about with stuff like that, if its not for anything serious then rota will be fine however its like buying a fake watch or handbag, it might look the same but when you compare quality there is a huge difference... you can get a set of te37's second hand for about 500 quid i would rather buy some tatty second hand te37's and get them refurbed than buy rotas...
oh and inovite wheels are even worse than rotas lol