I don't think that there is a debate on whether or not these products listed in this thread are 'quality products'. I think it all comes down to user preference.
Back to the AIO subject.
1- Would I use AIO as a 1 stepper on an older vehicle? No
2- Will AIO remove or fill swirls/scratches? No
3- Would I use AIO to clean the paint after polishing to ensure a clean surface for bonding? Yes
4- Would I use AIO to strip any wax for a clean surface? Yes
5- Are there other products similar or could take place of AIO? In most cases, yes... but Jngbrdmans red truck with oxidation showed AIO is a mighty fine paint cleaner.
6- Is Klasse AIO overpriced? With all of its uses and the quality of the product I say no. It is surely more expensive than other products but so isn't Souveran compared to Natty's.
7- What other products do you use that you feel are a better buy? PwC and PwC. P21S Paintwork Cleansing Lotion is another good one.
8- What other products do you use that you feel do a better job? Hard to say. AIO is very versitile. For paint cleaners, there are many products that do a good job. But for oxidation, AIO seems to get the upper hand (even though PwS/PwC did a great job as well, imo)
In the past I have done research and tested PwS, PwC, OCW and AIO for durability/slickness. Even though there aren't an pics up, hopefully the descriptions would be sufficient:
http://www.detailcity.org/forums/de...-pws-review-input-needed-2.html?highlight=pws
As for the cleaning ability of other products, I did a test spot on my Jeeps hard top of PwC, PwS and AIO and all did a good job, and since PwS is still being tested I decided to use that:
http://www.detailcity.org/forums/poorboysworld-com-sponsored-forum/18897-pws-win.html?highlight=pws
OK I think that's enough from me!

Have a good weekend