I may be setting up a 180g tank in the future, and I was wondering what you guys have used as return pumps in the past, I am looking for 1200-1300 GPH for $150
How loud is it? This will be an in-wall aquarium, so is it audible through a layer of drywall?When I setup my tank, I started with a Danner Mag Drive 7.5 - it worked fine but was way too loud for my purposes, and I ended up switching to a Sicce Syncra 3.0. I'm really happy with the Sicce, it's effectively silent - I can't hear it over the trickle of water going through the emergency standpipe in my Herbie overflow. It looks like you would be looking at either the Sicce Syncra 5.0, which is a bit over your price range, or the Danner Mag Drive 12, which isn't.
When I did my research to replace the Mag Drive, my second choice was the Eheim Compact series. It looks like the Compact 5000 would fit your needs and is a little cheaper than the Sicce.
How loud is it? This will be an in-wall aquarium, so is it audible through a layer of drywall?