At this time of the year, when days are short and road conditions sometimes pretty bad, it's really crucial to keep car glass in good shape. Many times I experienced pure visibility during night driving and that's not fun at all.
I use two Meguiar's products: D120 Glass Cleaner Concentrate and NxT Glass Cleaner. D120 comes in 1-gallon Detailer Line container and dilutes 10:1, so in most cases it lasts a long time, I like its cleaning ability very much. NxT Glass Cleaner I usually keep handy (including one bottle in my car's trunk), I like its protecting film but its cleaning power is below D120's.
Let's take a look at Meguiar's newest 2012 Perfect Clarity Glass Cleaner. I tested its small 6-oz. version which comes with WalMart Holiday Gift Set.
Its scent is very similar to NxT Glass Cleaner.
I must say that its cleaning ability is really great. In one pass it removed almost all the dirt. For testing purposes I did two passes on each window: first up - down & then left - right. I would even give it a slight advantage over D120 in cleaning power.
GET IT !!!
This product really cleans well and improves glass clarity. It's definitely going into my arsenal.