I've tried several different brands of wiper blades before - and I'm talking about the ones found at the various auto parts stores, not the premium ones that are $30/40 each.
And since I've only had my LS for a few months, this is from use on other vehicles.
I've found that most work really well initially - it's a matter of how long they last. I remember the Bosch micro edge working very well, but just didn't hold up as long as the Anco Aerovantage blades. I'm super picky when it comes to wiper blades so I replace mine about every 6 months. If they start to streak and can't be cleaned - they get pitched.
On my LS, it had some crap, worn out aftermarket blades on there when I got it so I bit the bullet and purchased the Lexus brand blades. I heard they were the way to go especially since refills were so cheap. So far so good.
What I'd really like to hear is an update a few months down the road to see how those Icon wipers are holding up. If they truely are that good, I'd have no prob spending the extra $$.
Keep in mind my wipers have to withstand the freezing winters of the Midwest unlike some of you west coast folks. :P
Thanks for the info on the Icons though - I might have to check them out, at least for my wife's vehicle.