I have a bottle of this newer polish from Menzerna but have not tried it to date. I still find SIP/Nano the combo to beat especially on the harder coats of Vette and Cadillacs.
Since the gloss rating on 203 is high it should not haze if broken down properly prior to removing. Hazing with polishes sometimes suggests over use of product or not working it long enough.
As for Souveran Paste ... I have always suggested anyone of the kits like Sizzling Shine versus buying wax alone for best value. Add in the 20% off deal and this is serious good looks and more than 30 applications.