kinda depends on what you want out of it. Do you have a carnauba or sealant LSP? Zaino Z6 and Z8 are great over sealants. Poorboy's Spray and Gloss is pretty good, and the Spray and Wipe is more of a waterless wash type of product but can also be used as a QD.
My personal favorites are, in no particular order:
Griot's Speed Shine, Adam's Detail Spray, Clearkote Quikshine, UGE, Sonus Acrylic Spritz, and One Grand Show Off (this is a recent favorite of mine... it looks awesome over my Pinnacle Sig II).
I also really like Poorboy's Spray and Wipe for a waterless wash.
The current forum favorite is Finish Kare #425. I think it's okay, but not the be all end all. I much prefer Sonus AS.