The Collinite is very well regarded over on Detailing World, for the money it's an excellent choice by all accounts, I was tempted to pick some up myself but already have a few to work through. The durability on the 915 is supposed to be slightly better I think but then it's sightly more expensive too.
What they seem to say is that they are great for Winter when you can't get out and wax as often, get a couple of coats on and then it'll do the job for a good few months.
I tried some Chemical Guys 5050 on one of the cars at the weekend and Dodo Blue Velvet on the other, the CG stuff seemed to give a bit more depth and the beading was slightly tighter, a lot like the Victoria stuff I usually use and like.
To be honest I suspect you'll be impressed with any stuff CYC have listed on there but give the 476 a go - just be aware that most of the shine you see or a show car / detailed photo comes from a good machine polish, the wax just adds that little bit more.
If you are near a Halfords even the Meguiars NXT paste is pretty good, won't last as long as the 476 but gives good results.