Don't 50-50 them. It hurts. It also may do bad things to your rear wheel. I nuked a 5.1d in this manner today. So, what to replace it with? I got 2+ years out of the 5.1, so that's not bad at all, I don't need anything super burly. I'm light, and, aside for the occasional moment when I'm not (see: 50-50'd road gap) am pretty smooth. On the other hand, it is sort of tempting just to say fvck it and get an 823 or something that I know I'll REALLY have to try to break.