Price: 5 stars - two sets of reels and a range of extras for less than $20 seems reasonable Quality: 3 stars - nothing seems good or bad from the looks of it Performance: 1 star. So, from the review, as soon as this thing hits the carpet (I don't even want to know what the carpet sounds like) it sounds like it's possessed by the Tasmanian devil. But overall it seems clean. Since I installed them, my Roomba doesn't seem to stay on the docking station properly and I'm getting an error message. The average is... well, average. 1/2 stars. To be honest, we all bought a Cadillac among the robot vacuums and decided to install cheap non-genuine parts because OEM costs 2-3 times more. For me this is a lesson. Next time I think I'll shoot between the two options.