Poorboys is overrated - doesn't last as long as EGP, so use that instead if you have it, or something like Collinite 850 (have a look on eBay)
If you seal your wheels after cleaning them thoroughly, you should really stop using such nasty s**t as AG Clean Wheels, if you must use something from Halfords, then use their Custom Wheel Cleaner instead - much safer and kinder to the clearcoat on your wheels.
If you protect them, then you only need to shampoo wash your wheels each week, thus removing the need for aggressive wheel cleaners.