IMO the Ultra Lock+ has slightly better shine, and significantly more durability. Ease of application was essentially equal for me. I think it's worth the extra cost.
A big +1 for P&S Rags to Riches. Been using it for over a year now, and IMO it is the best around. And as mentioned, a good deal when on sale- especially the gallon size.
Just my opinion, but given the substantial interest in VRP... perhaps this thread should be pinned. Then again, maybe it doesn't meet the criteria for it-
I've only bought it on-line. There are several outfits that carry it, I bought my last bottle on Amazon. It's sold in bottles ranging in size from eight ounces to one gallon for those who drive long freight trains. Only a thin coat or two is needed.
It is the ONLY stuff that I've ever used, which caused people to ask me if I had just bought a new car, or otherwise thought it was new. Twice last year, once earlier this month (and the last time I hadn't washed it in at least two weeks!).
A few years ago I decided to give Jescar Power lock + sealant (the predecessor to Ultra Lock +) a go, and was thoroughly impressed with it. Super easy to apply and wipe off, and durability to boot. So last year I purchased some Ultra Lock + and applied it to my 2017 Accord EX-L V-6/6MT after...
I usually run about 5000 miles per oil change in both my 2017 Accord & 1995 Civic. I've run the Civic OCI as high as 8000-ish miles once, but that was an exception.
The Accord, of course, has always seen synthetic oil and my Civic, mostly so since I've owned it.
Yep, cerium oxide is the stuff. Nothing better for truly polishing glass and removing minor imperfections.
A number of years ago when I was younger, I used Superox-100T cerium oxide compound to polish the windshield of my '95 Civic, which I still have(!). I used a TON of elbow grease polishing...