I second the black dog for versatility. i'd also like to point out that Tim recommended a Riff Raff 8 calibrated set for my upcoming mahogany 8 string guitar (schecter c-8) which is pretty much a rockier black dog. it all depends on the scale of the RG2228.
I keep getting amazed at the cleans i get from my black dog in my ash guitar. i've never liked cleans from a bridge pickup until i played that one. and it can also be very very brutal when you want it it. it's a pickup that you have to play, it doesn't play itself.