The upgrade from your Bane to a very used, discontinued unit that might have parts you can't readily get (Daishin Pump comes to mind) wouldn't be something I'd recommend to you.
You'd be going from simplicity and reliability to a unit that would give you better performance WHEN IT WORKED, but would also likely give you nightmares during your "mechanical learning curve".
If you already had experience with
Prochem units, and were handy with doing your own upgrades and improvements, it might be worth 1500-2000.00.
I'd wait for something newer, or something new.
Have you talked to Odin about his upgrades for Bane Clene units?