Ajax glass cleaner vs meguiars nxt generation glass cleaner.
Don't be cheap use the meguiars its way better. I now use it my in my home to!
Not to get off topic at all but I've been using Invis Glass for 5 years now but I recently switched to Meguiars NXT Glass Cleaner and I gotta say...Invis Glass ain't got shit on Meguiars NXT. The only downside is you gotta order it from the Meguiars online store but still, it's well worth it.