I haven't used Poorboys Spray and Rinse but that's why I purchased Meguiar's Wheel Brightener. For those bad, dirty, neglected rims. I haven't used it just yet but next vehicle I get that is worthy of the Meguiar's Wheel Brightener I will definetly use it
I personaly am I big fan of P21S Wheel Gel, it's safe and it gets the job done right
I look forward to see what others will suggest.