I'm with you on the OEM wiper blades.
Until just recently I've always bought wiper blades for my Subaru from the dealership. Until I learned that Subaru uses Denso Designer as their OEM wiper blades. Now I just buy Denso Designer on Amazon. Great wiper blades. I've always been very happy with their performance. No squeaking, chattering, streaking, jumping. Just smooth, spotless performance.
For my SL550 I use Bosch Aerotwin wiper blades. Once again, selected because, I believe, they are OEM for my car. They appear identical to the OEM wiper blades they replaced, except instead of the Mercedes tristar, they say Bosch on the end caps. These also perform very well, but they do chatter a little on the inside end. I suspect it has to do with the length of these wiper blades, and the way Mercedes designed the sweep angle, more than it does the quality of the wiper blades.
If you prefer beam style for the harsh snow and ice conditions of Wyoming, I would recommend the Bosch. But the Denso Designer has always performed well for me. I could recommend either one for winter conditions.