For me it would have to be DG, just recieved some of the UK's first ever shipment of #105 and WOW! Plus that fact i am one of only 2 UK authorised DG detailers :D
Duragloss can be applied in sunlight as well.
CG M-Seal is instantly layerable.
But i prefer #111 at the moment, however my UK DG distributor has just recieved the UK's first shipment of #105 TPP which i am going to try tomorrow.