I purchased WindowBlinds first, then I wanted BuilderBlinds, and it made sense to go for the whole ball of wax. I made 2 skins for WB. I would have continued skinning WB, but the updates came so quickly, I got fed up with trying to keep up. Then my subscription expired, and a few months later, I dedided to check out what improvements had been made with OB, and DtX, so I subscribed again. OB had really improved, (I still didn't care for DtX), I was going to try my hand at OB skinning, but found it was very convoluted, and gave up. Icon Packager's improvements weren't that impressive. Drive scan is almost identical to TreeSize Pro, but does less. Control Center still isn't skinnable....yadda yadda.
I'll always use WindowBlinds,

but I'll save the rest of my money for other things from now on.
HoverDesk is better for my needs, and I get FREE upgrades for life
WindowBlinds and HoverDesk.......That's the ticket!!!
Too bad Brad won't let us have a HvD section here.