OP, just wanted to make sure the Netgear XS505M and XS508M were on your radar.
They are unmanaged, but they will achieve what you're after. I know they don't quite hit the mark but maybe you can grab one discounted, or tweak your use case to fit the smaller one.
I actually just grabbed the 8 port Buffalo unit from Amazon Warehouse for $385 so will be testing that out.
Great spot, that is only $385 US (although they're charging over $550 to $600 US here for it in Australia)
It's getting close I suppose. Although the buffalo is only $115 more for 4 more ports.
Much closer, if someone would list this darn thing for $299 USD, wonderful.
Thanks for reply!