Someone posted notes for a simple meckwell light style strong club that was close to what many good pairs play. That's definitely my preference, particularly if you can find a partner to have lots of good agreements with and to discuss theory with and everything. It's a great system to customize for whatever you want it to be. It can either be really simple, or, if you prefer, you can really make it complicated and quite good, imo. Others will tell you about all sorts of relay precision systems and CABs TABs and SABs and stuff, and I think those systems aren't as good. I've said it plenty of times before but I'll say it again. If your judgment in bidding is good, you don't need relays and stuff. I think you'll really be happy with whatever you choose though.