My random* thoughts on these products. (* I haven't made my morning pot of coffee yet!
)
My understanding is ultimate compound and ultimate polish are meguiar's consumer friendly answer to 105/205 (and that pair is almost universally loved, in spite of the learning curve). They aren't the same as 105/205, but are supposed to be somewhat similar. The price can't be beat. Good solid products to have at a low price point. NXT always seems to get panned yet I don't really hear the same complaints about Megs #21 synthetic sealant, which is supposedly very similar if not almost the same product. Go figure. I remember it being easy to use and had no problems with its look. I don't think it's worth returning unless you'd rather have ultimate wax and you can readily exchange the two, hassle free. If you decide to keep the NXT and use it often, you will have a very clean and shiny car that will be just as easy to wash as the car with the hundred dollar wax.
I personally like ultimate quik detailer. It works well and smells fantastic and leaves the paint incredibly slick. Ultimate quik wax totally beats it on durability, but requires a clean, dust free surface. I might not buy ultimate quik detailer again now that I am using Ultima Waterless Wash Plus concentrate for those quick detailing duties. UWW+ followed up with megs ultimate quik wax works really well. The 22oz ultimate quik detailer bottle is a perfect sprayer for UWW+. A half oz UWW+ concentrate and 22oz of distilled water in that bottle gives the required 1:44 dilution. So, I say keep the Megs UQD, use it, see if you like it, and hang on to the bottle to use for UWW+ (a product I highly recommend you get next time you order something from autogeek. Thanks to Cee Dog for his review and recommendation on that product! It's a keeper!).
Although the OP didn't mention Ultimate Wax, another poster did. I think it's worth mentioning that the streaking problems with Ultimate Wax, which I happen to think is a good product, are probably more of an issue for a professional detailer where you want it to look perfect immediately so the customer can drive away with a flawless look. The streaks supposedly work themselves out with time, do not occur if the product is applied thin enough, and if they do occur, the impatient can take a *very* lightly water moistened buffing microfiber cloth and gently buff the streaks out, either immediately after, or the next day if that's when the streaks appear (just clean off any dust accumulation with a quik detailer or waterless wash beforehand). So basically more care and/or time might be required for a perfect look with ultimate compound. For a pro detailer, this can be a logistical issue, but for a car enthusiast it might not be.
-Rick
