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...or your best. While the regs my LDS uses in the pool don't breathe as sweetly as my regs, mine would not likely survive students nearly so well. If I'm ever going to bash my reg against things, flood it, and make all those newbie mistakes, I might have to consider a nice, bulletproof workhorse reg.plot:Goto your LDS and look to see what they're using on pool/OW rigs. That's probably close to your worst reg.