the booster wax is a pain to use. i mean if u feel the ened to do a touch up every month then i guess it would be alright (nxt hasnt lasted more than 5 weeks for me anyway). it doesnt spread real easy and removal is the equivelant of the wax. the speed detailer like u said ROCKS, nothing compared to spray and gloss or adams but definately one of my fav. otc products. the protectant is not something u wanan uuse on u're tires, unless u enjoy slinging, streaking, super hgih gloss, low durabilty, oily feel, ect. i used it once for interior dress up. the next day while i was in traffic and the glare bouncing off my dash was SOOO ANNOYING. i would only use the rpotectant if i was going to dress up a tire for a show and it was really low profile.. thats the onyl time i think high gloss tires look good. when they have 3 inches or less of tire.
ive never used the metal polish but it probably works well. i personally use neverdull by eagle one or aio for my metal exhaust tip or chrome trim.
:edit: they came out with a new tire dressing call insane shine or somehting liek that. it gives the same looks as the protectant (form what i can tell from some pictures) but thats all i know about it. oh yea, its an aerosal.
