For me it is: SEVP - good looking young men, uncut, bareback, mainly with bush - everything I want.
2nd best: Belami - good looking young men, uncut, previously with condoms but now more and more bareback, mainly with bush - but largely the same men over and over again, with not too many new joiners of the studio.
3rd best: Eurocreme - especially when they do East European models (and not English ones, plastered with tattoos and with shaven bodies).
Others: Alexboys, RUboys, Uralboys - quite good.
Most other studio - not as good as the above.