I have an "06 TL Anthracite that i bought beg. of June. I have already used the Klasse AIO and 2 coats of Klasse Sealant Glaze. Came out nice. I have washed it 2 or 3 times since. I have noticed water spots on the car and I do hand dry. Almost seems like they won't come off. I sprayed some of the above on the trunk lid and they did not come out. Any advice. Also, is it a good idea to use the Meguire's QD after every wash or is not really that good with the Klasse products. Will it make the Klasse last longer and if not what is the real benefit, if any of using the QD after a wash. Would take about 20 minutes I think to QD the whole car since it seems to go on and come off real easy. Thanks

 

I am not sure if using Megs on top of Klasse makes any difference or not, there may be a similar Klasse product that they'd recommend.
I don't think QD will help to remove water spots unless you can catch them almost right away. One of the detailers here will probably be able to answer your question better, but a paint cleaner has been recommended before for a similar problem.

You don't have to use QD after every wash unless you want to.
I kinda go by what the bottle says and use it between waxes to add a little shine. I waxed with NXT at the beginning of May and have used the NXT Speed Detailer only twice since then, and water still beads great. I am on the wax every three months schedule. I may use it one more time before my next wax at the end of August.

 

Using a QD after a wash prolongs the longevity of the sealant, feel slickier and will give the vehicle a "just waxed" look. I use UPPS or OCW once a month and after washes, I use PB S&G. Never had any problems with water spots. I would suggest using a 'nuba (Nattys/S100) over the SG vs another polymer (NXT).