Konical - I'm mostly 120 with a dash of 135 thrown in, and I'm really (pun not intended!) looking for a 120 solution. I think that Hewes idea of saying "we'll do 135 well and 120 well, rather than adjustable less well" is great, but after having a quick play with their 120 reel at my local shop, I'm not ready to give up on a plastic solution yet.
Flink - darkroom isn't possible. I'm using a fairly large bag (25") and I'm still finding that a bit cramped with the system 4 tank in there too. Next time I'll try latex gloves and long sleeves to see if that can keep moisture down a bit. If the light is cooperating tomorrow.