u/infinity-health

I’m looking to buy a new pump sprayer for car detailing and would love to hear your recommendations.
Which pump sprayer do you think is the best available in the UK?
I’m mainly considering:
IK
Hydro
Kwazar
Marolex
Are there any others I should be looking at?
Also, if you could only choose one detailing chemical brand, which would it be?
Bilt Hamber?
Koch Chemie?
CarPro?
Auto Finesse?
Gtechniq?
Infinity Wax?
AutoGlym?
Something else?
I’m interested in real-world experience rather than marketing.
Thanks!