There's a Bungard on eBay at the moment - don't know anything about it but it's on a Buy-Out for less than the last one that I bid a £1k on (though that one had a ATC).

PCBs give a bunch of problems - high speed spindles with little run-out, high rigidity (but coupled with no requirement for large Z-travel), high accuracy, high precision. some of these are incompatible with your other goals, so whatever machine you go for you might have to compromise.

Can you not consider perhaps two machines?