SO, ZEP/Blue Coral/Armor All are all good, but higher than a Girraffe's A$$! Scotch Plaid is ok, as are Stinger (but good luck working w/ Stinger).
Now, onto K-R: what Pre-Soaks are good & bad? How bout Purple Passion, Kleen Power, Simoniz Super-Soak, JBS Storm-Power(kinda pricey), etc...?