I don't know what you plan on spending, but if you have some room (and it takes some room) I've been really happy with the Aquamedic Blue1000 that I got from
www.aquacave.com
They aren't uber cheap, but $199 US isn't bad considering what people pay for some skimmers. It pulls a lot out and only uses 12W. It is
BIG though. I use it in sump rather than HOB but it's made for both.
Another one you might want to consider is a Tunze...the 9002 is rated for about 58G and doesn't take much room but is known for being good.