Meguiars seems to be the best performance/cost balance.
I think that's fair. My late MiL always used to give me some money to buy 'something nice for the car' at the NEC Classic Show, so I used to buy Swissvax and Dodo Juice stuff (because she liked the smell, especially the mango-flavoured Swissvax) which are excellent, but not massively better than Meguiars but significantly more expensive.
I've not used the Belt Hamber wax, but I'm a massive fan of their All Purpose Cleaner, you can buy it in 5 litres and dilute as required according to what job you're doing.
Tim H. 1986 4/4 VVTi Sport, 2002 LR Defender, 2022 Mini Cooper SE