Hey Todd, which product do you think cleans the best by hand application? I've tried KAIO, GPS, BF, WG & Pinnacle Cleansers and honestly, I would give the edge to KAIO. After using my nanoskin, I like applying KAIO by hand w/a damp MF just to get the last bit of residual contamination off the paint. Sometimes if the paint is in good shape and I don't need to "clay", I can just use the cleanser product alone. I don't need/want the sealant so Ultima PPP would work. But 1Z, Sonus, & Four Starr all make cleanser products and would like your opinion. Again, most of the time I'm applying this product by hand.