Try the Crossman Premier Hollow Points . They're available almost everywhere and shoot pretty darned good in every .177 rifle I have. They're not always the best but I've never found them to be the worst either. They are advertised as 7.9 gr but actually they are 8.0.
I like the RWS H-points and RWS target wadcutters. But let your rifle tell you what the best pellets are. Each rifle is its own law, particularly with respect to airguns. Bearing surface is as important as pellet weight, so be sure to compare pellets by that measure as well.