finally, someone asks about non factory blades.
we use them, theyare oregon blades. theya re the low lift version of the same blade]\
i find i get better discharge and less deck buildup with these in most conditions. i use the high lift factory in the summer when things are not as tall or wet. hope this helps
i do however find i have to grind a little on the ends of the blades as they actually are just a hair too long, and hit each other. it sounds so much worse than it is and have to do this with alll non oem blades i have ever used.