For me personally, a big factor in moving from a C to an E Class is the extra refinement and toys I can get, so I'd definitely want to hold out for a car with everything I want, even if that means waiting a while. I'm happy to retrofit an LSD but things like the 360 cam (my wife would be horrified if I turned up in a car the size of an S212 and it didn't have 360 cams lol) are much more difficult fit. Even my C63 has blind spot assist (useful for motorway slogs) so I'd at least want that. Prices are super high at the moment anyway, so unless the perfect car came along, I'm happy to wait to see how the cost of living increases over the coming year has an impact on second hand prices.