I would just stick to the husqy endurance blades. I had seen reports where these blades can break and the bolts get stuck in the cutting disc. I dont want razor debris in my yard for me to step on at some point.

 

Honestly I've had brand and unbranded blades get stuck with grit and pinestraw on the blades. I've had the branded and unbranded both wear out at different rates to the point that I couldn't establish any real statistical significance about whether any were better. I generally think that the Husq brand are a bit sharper and cut a little cleaner, compared to generic, but I also found that cutting edge on the husq round of faster. When I'm using PGR I'm cutting less and I still won't go longer than 3 weeks before swapping blades, generally 2 weeks is about all I'm getting out of either, but I don't wait till they get dull before changing. With the fairway kit and all my sand its about as bad of a torture test on blades you can get. Did I mention Pinestraw is the enemy of the automower, I'm always checking the mower to see if straw is wrapped around the screws.