Yes I've heard of ROR and was going to invest in it but, the reason I've tried all the other options is I was never happy with them. My search point stopped with Purosol because my results have been excellent.

The Edmund Optical web site has a lot of lens cleaning options including EO's own cleaning solution. I would experiment more but jeeze they really hammer you on shipping. So unless you happen to be in the market for an RKE as well as cleaner, I would buy somewhere else.

good luck,

Greg N