I have had all three they all have there pros and cons. one thing on the wells, I had a helper roll me up after a tie-in, next day fired my machine up and i noticed it was not idleing down.
After messing with the machine noticed the well was smoking. well a rod got left in the stinger and the bed was grounded out and i was unrolling a 100' of lead and taping were the glowing rod had burnt through all my insulation.
I prefer just to wrap it up but, everybodies needs are different
I've never used wells, thought about it for security but then also thought about rolling up after a job, which would be all well and good if I put them up all the time. At times I'll be out and the guys I'm working with(probably to get me off the clock quicker) will help load up. With wells I could see this would be a problem for me, I'm pretty anal when it comes to how things are put away and could just imagine a guy wadding 100ft of leads in a hole I'd have to dig out(like a bait casting reel) later. I've got a wrap for my oxy/acet hose and am real happy with how that keeps everything clean and neatly rolled up but not sure if I would do that for the welding leads. Rolling up 100ft of oxy/acet hose on my wrap takes 10-15 minutes, just because I know how I want it on there, 1st layer, edges touching, 2nd layer, same, end of the torch hose tucked in the same way everytime....that's the anal part coming out! Like my reels for the speed/neatness and that's why I pay boku amounts of insurance every year, in case somebody needs to buy a few 40's and see's my cable as a simple way to do it! LoL!
Reels though do take up space as would wraps, wells definitely leave the bed looking cleaner, less clutter on the bed when rolling down the highway. I look at some of these guys beds and wonder where everything is, no mud board, no leads, extension cords, nothing, just a flat bed with two humps for boxes and a welder. It all comes down(as does running a bead) to what works for you, how you like it, how you feel about it, etc., etc. Like somebody said, each has it's pro's and con's that is for sure!