Do any of you age your beers? If so, how has your luck been? I've aged a couple and plan to do some more. Belgian styles like Tröegs Mad Elf have aged best for me.
Bottled beers have a shelf life, a flip top would maybe be better than your average crimp on cap. But it's meant to be drank not admired on a shelf. Plus that's why Mad Elf is a seasonal, ment to be enjoyed during that time frame (although it's not for me). Troegs chocolate stout was rather tasty though from their winter variety case. I've gravitated toward German style beers.
Id have to disagree with you on the flip top aspect (from my experiences)
More times than not when doing homebrew, the beer will carbonate in the bottle by adding more sugars post fermentation/secondary. The pressure will rise from the newly created CO2 and then absorbed back into the beer.
Flip top bottles are not meant for this pressure, crimped caps (and the appropriate bottles are)