Not used the MistX yet. Might have been the Britemax one you mentioned, I've got the waxybox cards somewhere, so if I can be arsed I'll go back and look through them. I'm sure it had polymer in the name. Angel Wax was my go to QED for ages as it's so inasanely well priced and incredibly easy to work with.
I imagine BSD would work well on wheels. I can't remember what wheel wax I last put on mine, but I think it was another waxybox sample and the endurance is sensational. I rarely wax my wheels as it's a PITA and I wash them alot, only really do it when I'm at my Tech and he pops them off for me when the car is on the ramp, but I've not been for months so it must be good!
Edit: EcoTouch Quick Wax was another I really liked but I snapped the sprayer off when I was tightening it and dropped the bugger, lost most of it, but have a nice beading patch on the floor of the shed