I've been reading about cleaning glass and it seems that IG and eagle one 20/20 get good reviews. Having neither product, I was wondering how would these products stack up against S&W for glass cleaning? My initial thoughts would be that IG and eagle one would evaporate quicker as they contain alcohol. At the present time, I can't see buying another glass cleaner type of product when S&W seems to work fine. (at least for me)