I've only been doing this for a year and a half and my experience has been restricted to our personal vehicles. It is impossible for me to answer this question. But the following products stand out over all that I have used:
1) Swissvax Wheel Brush: I know it's a tad expensve for a small brush, but I use it all the time and it works great. I use it to clean the wheel face and lug nuts.
2) Optimum No Rinse: I do not use ONR all the time. There are times when I prefer an ordinary car wash, and even when I'm using ONR, I prefer a hose to clean the wheels and tires. But ... it's great when I want to do a quick wash--no hose to worry about, no water dripping from hidden cavities. And during the winter months, ONR is just a necessity. I can wash my car in the garage.
3) Meguiar's Ultimate Wipe: this is my favorite microfiber towel. I use it to remove wax and quick detailer.
4) Ultima Paint Guard Plus: this is the sealant I use on my wife's car. I love the ease of use: wipe on and walk away. The simple fact is, the less time I have to spend on my wife's car, the better. It's easy to apply, it looks good, and it's durable. I've never tried Opti-Seal, so I can't compare; I gather the two products are comparable. I'm so glad someone invented a good wipe-on/walk away sealant.
