Probably going to get flamed, but I'm putting on my suit and here goes:
I use to detail....not as a personal business, but as a job through junior college, learned from a guy who previously owned a business. Family worked in various areas of car business and we all love cars and take care of them. So, I can respect time, attention to detail, and a beautiful and clean car. With that said, I find the price for the application and use of any of the CQuartz style stuff simply.....OUT-RAGEOUS! I've never had this shit done, and I probably never will. ESPECIALLY if the car is 100% garage kept and out of the elements most of the time (interesting the guy SpecialOps quoted "requires" this for his warranty....it's simple, to make his "warranty" work basically unneeded!). It looks pretty, but the cost/benefit is ridiculous. By all means, if anyone wants to spend their money on it, awesome, go for it. However, it's not going to be an overwhelming difference in the long run to anyone who properly washes and waxes and cares for their car on a regular basis. Plus, this stuff requires upkeep time as well. Furthermore, most people who have this done already take care of their cars well, or, get rid of them for the new coolest thing well before this stuff provides a benefit.
Buy a couple good wash mitts and drying towels, a decent car wash soap, a good polish and sealer, and use a little elbow grease every couple months and save yourself $2375-$3375.
I do like the PPF stuff.