I never understand Rota crtics to be honest.
Yes Rota are comparable in design to a lot of brands out there, but the build quality is second to none and wouldn't say a set of 19 inch wheels for £1k is exactly cheap, my opinion is that If you go down to Halfords and pick a set of wheels up for £400, that is cheap.
I like the Nismo LMGT4, but are basicly the same design as the Rota GTR (you just pay 4 times the price because of the Nismo brand), I think the value for money for a Rota is very good and that is why so many performance cars have them fitted.
Maybe I'm bias because I just brought a set of Rota's But done my research, Rota for me can't be beaten for quality at the price they charge.