I bought the WG package from Autogeek (great site BTW) and here's my take, the AutoBathe is nothing special, the Clay works great, I've yet to hear a negative on that, Swirl Remover - weak as water, I used it as a prep for the LSP, Pre-wax cleaner - again wimpy, Sealant - we have a WINNER! Spritz spray - nice touch. So, get the clay and sealer, maybe the spritz.
XMT line - I used the Glaze, couldn't tell that it had much effect, #1 - sucks, dusts, weak, stinks - OK I hate it, #3, GOOD - nice smell, I used it as a polish to restore some dead paint, w/PC and LC orange pad. Never tried the PS wax, I'm a sealer kind of guy.