Most waxes I have tried bar the Zymol and Swissvax ones can not maintain the just applied look after wash, it is the main benefit to them IMO. Everything else I have tried seems to fail, CG 50/50, P21s, Souveran, Clearkote CMW and Nattys etc. The Onyx though seems to maintain it's appearance easily.
Re the drying I don't dry the 182 at all now, I rinse it with the hose pipe and then use 2 cans of Aquagleam filtered water and allow to drip dry (apart from the shuts, wheels and arches) and then just QD with Plush Microfibers.
If I do conventionally dry I use Sonus Der Wunder Towels and pat dry and they seem fine. Maybe the Mitt ?