| | check out the wax test here<---
Zaino seems to be the wax of choice in this forum.
I don't remember any posts on solid vs. liquid.
I use a liquid synthetic acrylic polish (it's not really a "wax") that came with my new ride. I've also used the "Nu Finish" synthetic and Blue Coral products with good results on other cars.
The paste products seem to be more work to apply but the results are what you're after.
2004 E60 530is, Delivered 12/12/03, TiSilver/LGrey, PP, SP,PS, PDC, ACC, FRS, Step, Xenons, clear bra, body colored rear inserts. (Retired, 1983 henna red 320is)
2004 Corvette Z06 Commemorative Edition