Remoras are a good bet on a low maintanance filter. Like any other injection skimmer, though, the performance is largely dependant on salinity and whether or not the tank is contaminated with oils (KEEP YOUR HANDS OUT OF THE TANK WHEN USING THESE!).

Other than that, you could go for the Coralife Superskimmers. They're very well priced and can remove quite a bit of junk from the water column. That said, there's a few glaring drawbacks of which I've addressed in a post in the Product Review forums.

I hear EuroReef is working on an HOB skimmer though...

thanks alot for you input and advice.
man do I ever still have a lot to learn
Neal

You can sometimes pick up a good skimmer used by watching this board and others. Another skimmer that works well is an ASM - bit more $ but a great skimmer - you have to run them in a sump though.
As far as HOB skimmers go I agree (again) with Albert the Remora Pro is a great skimmer although I do dislike the mag pump hanging in the tank.

any not-so-obstrusive HOB recommendations...dont' really want the pump in the tank ..
what about in sump ones? My 90 gallon has the remora C...tank is abit big for it...was looking at taking that remora C and putting in my 77 Gallon FOWLR which doesn't have a sump.
My 90 gallon has a 30 gallon sump and about 24 inches clearance....what should I look at for that?

Bing bang boom
 

Lol

24" of clearance SHOULD give you enough room to run a EUROREEF RS100 ($320ish retail).

The only other HOB's I can think of that don't take up a lot of room in the tank are the Deltec (inconsistant and pricey - not that I've ever tried one, just what I've read by people who have) and the Prizm (terrible product, dont' get suckered in by its cheap entry fee).

what bout Sea clones for a HOB? they are cheap..I have one on my Invert setup..came as a freebie..does an ok job of pulling some stuff out? any input?

Yeah, it's probably the MOST THROWN AWAY SKIMMER ON THE MARKET. But yeah, it has the same Maxijet 1200 hanging in the tank as the Remora...

Then again, G1GY has one on his tank and it's kicking ass... Go figure.

I have never run a sea clone but I have also never read good things about them either. I have 2 Deltec HOB skimmers and am pleased with both of them but they are pricey.
For in-sump I would go with the Euroreef or ASM. For HOB your best bet is probably a Remora Pro and then just aquascape around the pump if it bothers you.
You might also want to look at the bullet type skimmers if it is possible to drill your sump. They are a bit finicky but do pull a lot of crap out of your water.

I truly do appreciate the time you have spent answering my questions.
I will see what I can get
thanks
Neal