Fisrt there are several classes of record bass; state record, line class, all tackle and personal best records.
From a hypothetical perspective it's the expected norm today the release bass, even record size fish. The question with C & R is always about survival percentages, which are less the bigger the bass is.
The value of big bass is high in the bass fishing community, to catch big bass is an important goal.
When it comes to the moment of truth, so to speak, every angler reacts differently. The excitment of the moment, the desire to do the right thing, whatever that maybe, drives us to a decission; keep or release. The vast majority of bass fsiherman, that I know, kept thier first big personal best bass. The reason that most big bass are kept is they were in poor condition after all the handling, photographing, measuring, weighing and generally bragging about the catch to other anglers on the water. Releasing a big bass, after all the extra handling will more than likely lead to the bass dieing from stress.
My advice; handle these special big bass carefully and release all that are healthy, with the exception of potentail record bass. If a bass has grown to record size, it is at it's peak weight condition and will only get a older and less healthy, keep it.
The reality is; you may never get another chance to validate the bass was in fact a record fish without keeping it. I released a potential world record bass simply because of being caught up in the moment and not validating the catch properly and now realize that was more than likely my only chance, record bass are very rare.
WRB