Bests & Worsts Reviews from Amazon

I've owned the braun series 7 shaver for about 3 years now. I tend to replace the cartridge ever year. The first replacement I purchased had a new design (blue cutting strip), and cut really well. The most recent replacement no longer has the blue cutting strip down the middle, and tends to pull a lot. I've read other reviews, and this seems to be happening to others. This makes for a very painful shaving experience. I'm going to go out and buy this product from a local store, and return the amazon version. VERY DISAPPOINTING. Buyers beware - do not buy this product until Braun or Amazon gets this issue fixed.