I bought a F7790 razor in August 2011. It gives a reasonable shave.I have used foil razors for years and am careful not to press too hard.But now after only 3 months of careful usage one foil has a split. The replacement price for the pack is £31. This is far more than for most otherrazors, and I suggest you check foil replacement pack prices before you buy any foil razor. This razor may look a bargain at £50 but to me it looks more like a loss leader for future foil sales It is now December and another foil now has a tiny hole with sharp edges. At current foil consumption rate that's potentially £90 a year!