I got flow control on my Perlick's and love the feature. In case I accidentally overcarb a beer, turn the pour down a bit, problem solved until I bleed it down. Also, makes bottling off the tap a breeze. No more fiddling with the CO2 Gauge and bleeding down the keg, simply turn the flow down to next to nothing then slowly turn back up to trickle the beer into the bottle. In short, I find them very useful.