They're Great-give `em a five... well, they degrade visibility somewhat-but they reduce glare... and there's the speed thing.PRO: *fairly easily applied, no different than taking care to apply any other adhesive. *protects entire screen from any scratches or smudges--or those annoying mini-scratches that accumulate in one area like perma-smudge. *the writing surface is somewhat less slippery, improving accuracy. *they say to replace them monthly, though they're not significantly depleted of utility by then. *reduces the glare on the screen. **SPEED: Because I'm no longer anxious about scratching the screen, I'm writing more quickly. This was nothing I anticipated and makes them well worth the minimal investment.CON: *visibility issues-though these are greatly minimized by adjusting the contrast. *would be perfect if slightly easier to apply perfectly-I'm not particularly well coordinated, though, and I have done it repeatedly.So maybe I'd give `em a 4.5 if there were such a thing, but I can't, so five it is.