The DeltaLab is a very simple mono unit, but it does slapbacks and flanges with the best of them. Each button is additive, so you can key in an ever longer delay until you go for all of them at once. I love driving the brick wall limiter. Connections are 1/4" unbalanced.
The BiAmp might have the longest decay available anywhere close to this price range. It has flexible four band equalization too. One can drive the reverb and control the level of moisture as well. There is a choice of balanced XLR or 1/4" unbalanced mono connections.
These two units get along quite splendidly with one another, so I am selling them as a set for $225 shipped to the CONUS. If they must be broken up, the prices are $100 for the DeltaLab and $175 for the BiAmp including Paypal & shipping. Feel free to PM with questions or offers.
Thanks!