I'm not that experienced, but I'll try to answer based on what I've used so far.
Wet - I've used Bodyguardz, BSE and Zagg. They all have the orange peel, and they're all slightly rubbery. They don't have the smooth, glass feel. BUT they last forever and they stay put. To install you have to spray the film and your fingers, lay the film on on your phone, then squeegee the liquid out. Then wait for it to clear up because it always looks cloudy for about a day. Bodyguardz is the best of the 3. Much clearer and smoother.
Dry - I've only used SGP crystal clear and SGP anti-fingerprint. The crystal clear looks and feels like you have nothing on your screen. They're not as thick as the wet films. Installs very easily, you just lay it on your screen. Same with the anti-fingerprint, but that one is obviously not invisible. But they lift off pretty easily. When you're putting on a case, you have to be very careful not to catch the screen protector and warp it.