I really wouldn't recommend the Seismic Sink as I've had many problems trying to level the darn thing. You can pick up a used Vibraplane on Ebay (just keep an open eye.. I got mine from a Used Scientific Supplies store for about $300!). Barring the use of something like the Vibraplane, I would opt for the Big Rock 19 (maybe the TNT dedicated stand can be modified?).
