You can make/modify anything to work well, I have a heavily modified asm G6 that pulls out 5 gallons a week on my 600 gallon system,does a great job, I've also used a couple DIY dart needlewheel skimmers I've built taht did well, Right now I have a volcano in the works as well, it all depends on your budget and if you wan't plug and play or to mod things. Are you looking for internal or external? Any laguna based skimmer has been doing very well as does the reeflo skimmers.
Lots of choices out there.
I'm still a firm believer of there is no replacement for displacement, and a larger bodied skimmer is capable of doing a much better job with the proper pump