I like my Euroreefs. Having cycled through almost every skimmer imaginable, I ended up back with Euroreef. The skimmers I have tried for my 120 gallon (in relative order): RS Berlin, Turboflotor, MTC venturi (forgot model), Euroreef F series, ASM G-2, HSA 1000, Bullet 2, AquaC EV 200, Aerofoamer 624, and currently, Euroreef CS6-2.
I decided to settle with the Euroreef CS6-2 because of my specific criteria:
1. Energy efficient
2. Relatively quiet
3. Ease of servicing (I hate flanges)
4. Compact size
5. Skimming performance
It was also one of the simpliest pumps to set up, and one of the few that requires absolutely zero adjustments once set up.
I recommend the Euroreef.