I'll throw in my .02, I also use DIN whenever I can. All of my tanks are valved with Thermos, either 300 bar dedicated DIN or 232 bar DIN/K. You better believe that I pack a yoke adapter when I travel, though, since I have yet to see a DIN rental tank.
I like DIN for the security of connection, streamlining, and relatively lower risk of entanglement. I once had an unfortunate lift mess up the o-ring in a yoke and kill a day's diving, don't think this would happen with a DIN.
You will want to be more careful on DINs to avoid letting water get into your cylinder. If you fill right after diving or washing, residual water in the treads can get blasted into the tank, this is not as likely to occur with a yoke valve. You can also have the pleasure of buying Delrin or even better stainless steel plugs and caps for your regulator(s) and valves. Net net, though, I would go with DIN when I could.