In reply to MischaHY:
What's on the market at the moment - Aliens revo's, Alien CCH Alien, Metolius Mastercam, Metolius Ultralight TCU, BD X4, BD C3.
For my money, if it needs to be an Alien style cam, and you can wait for them to restock, Totem Basics. If not, it would have to be Alien Revolutions. If you can bear a Ladder style stem, Metolius TCU.
The Metolius units are very smooth (as long as you oil them to prevent corrosion) are blindingly light, have good holding power and last for ever and a day. I have some of the original TCU's from 1999 and they still work absolutely fine. I have the Blue and the Yellow and would possibly do the purple below that.
I prefer them to the Mastercam, which are just a bit funky IMO - I really wanted to like them with the new thumbpress but they didn't feel as nice in the hand.
Alien Revo's, well I don't know what the quality is like, I only ever saw the preproduction samples, but well, its an Alien but narrower. The CCH Version has a wider head...
C3, they are like marmite - either yo'll love them for their extreme narrow head width which is like a get out of jail free card, or you'll hate the odd stem.
The C4, kind of should be the best of all of them, but for me misses the mark - long termination, floppy in the large sizes, the cable kinks at the thumbpress crimp, the extra range just isn't that much extra in the small sizes...