This is another water filtration system that is significantly more economical than the CRspotless. I have no idea as to the relative performance, however.
As for mitts/microfiber, I bought a $hitload of stuff from www.autogeek.net
-- I like the MF mitts, waffle towels, etc. I am a Zaino guy so I have Zaino wash soap, two of the Zaino wash buckets with grit guards, etc.
2015 SO/SO MT M3 :: Exec : Lighting : Adaptive : HK : CF trim : Full leather : DAP : Black 19's : sunshade
Crystalline tint 40%/70% on windshield : M performance mirrors, spoiler, splitters : Status Gruppe CF lip : RKP diffuser : Fully dechromed
Bavsound Stage 1 : V1 Savvy hardwired : Self-coded