I have both the Chemical Guys Wash'n'wax and the Sonax Gloss Shampoo. Both are very nice, the Sonax for me leaves the bestter looking finish, the Chemical Guys does feel it makes a slicker wash solution. Both foam up well.
Cant go wrong with either, I alternate between the two of them and the Einzett shampoos on my the 182. Meguiars Shamppo Plus is also good is you want a safe wash that can be purchased in bulk, my new go to shampoo on the daily drive and my familys cars.