Well, I'm gonna run my factory Rubicon lockers until they give out, then I'm going with ARB. I have 15 year old ARB air lockers in my "68 Jeepster (D30 front / D44 rear from 72 Commando) and have never had an issue with them. Granted, I'm only running 33's on it, so the sir-locked D30 is more than adequate.
If you want a locked front end, but want to keep the D30, get an ARB.
No, I don't work for ARB.:cheesy:
According to your profile, you have an 08 on 33's. IMHO a selectable locker will be just fine with your horsepower to torque to tires size ratio!