The key is not how nice it looks now, but 24, 48, 72hrs from now or how easy it is to wash the next time. I used to wax too , now we polish with Zaino, trust me and several hundred others, once you do, you'll be writing this next time! (then we'll be able to see Inside the 2nd floor windows) [might want to put this under detailing]
I have been using the Mr. Clean Auto Dry system for several months now; I really like the gun itself, great regualr spray. At first I was using the Mr. Clean wash, but found it to be too expensive so I tried another brand of wash. I'm now using Meguiar's Gold Class car wash in the gun and it seems to work fine. As for the spotless rinse itself as long as the filter is good and clean the ionized water seems to do the trick; however the filter itself is expensive and does not last too long.