If you MUST have a halfstack then I can fully recommend an SX series stack.

Here at http://carvin.com/products/group.php?CID=SX

I had the SX-200 stack(looks like they are sold out) and it had an incredible sound for the money(I had a Boss MT-2 running the clean channel with a Boss NS-2 in the fx loop)

The best stack in the price range(forget crate,randall or marshalls cheap stuff)

Also,the cabinet is WAY better than the behringers...AWSOME bass and mids.