I'm going to have a knee surgery in autumn about the chronic meniscus tears and also have patella tracking problems and chondromalacia.
Knees are not a major problem for the most time, but in August I will have a vacation with a lot of walking and need a light brace for the worst knee to make it less painful.
I liked two braces on the photos and reviews (at least they look like something I could wear all day during vacation, still not sure about wearing with a dress

)
Cho-Pat Dual Action Knee Strap (several sizes)
Mueller MAX Knee Strap (one size)
Cho-Pat looks better at photos and Mueller is cheaper. Any advice? Both of them are made by Mueller, but their web-site isn't helpful.