That does read a little odd.
Powder coating returned to its elemental powder and simply fell or rubbed off like dust.
PJ1 is more like a dye than a paint and it was not thick enough to stop water getting through and rust lifted it off in the main but also water jetting off the front tyre finally put an end to it.
VHT was good but again did not last so well and was probably the worst of the bunch.
The B&Q stuff is called BBQ Plasti-Kote (GRILL AND BARBECUE)
Unlike what i said above it does not say on the tin what the gloss level is (gloss, satin or flat matt) but it goes on satin and soon become matt on the headers.
This stuff seems to be the best of the bunch.
It has also looked the best for the longest too.
http://www.ebay.co.uk/itm/Plasti-kote-B ... 1243971247
AL