When you shake the 845, make sure you keep pressure on the cap with your hand or fingers. The cap can come off. Don't ask me how I know!
845 is one of the easier and longest lasting liquid waxes I've ever used and it's typically the only one I use now. Sometimes I still might apply a cleaner wax (Meg's cleaner wax paste) and occasionally I use Collinite 476s. All the other waxes I have sit in a box.
OTC clay bar kits do work. I use Meg's clay bars all the time. Instead of wasting all the quick detailer, just use the clay bar right after washing and before drying the car. Mix up some clean water and car wash soap to use that for your lubricant. Keep it WET when using the claybar. Use the claybar even on glass, but avoid non-painted plastic and rubber trim.
When applying the 845, RTexasF is right. Thin is in. I usually can't tell if I did a good job applying it until it hazes up, so I use feel to determine good coverage just as much as I do by looking at it.
Last time I did the Accord, I applied it with a black pad. Quickest wax job I've ever done, even with 3 coats of 845 and waiting minimum 12 hours between coats.