Haha that we are. Are you still set between these two manufacturers? If it were me I'd take the WA3 over Schiit stuff in a heartbeat. Why? Built to order (Schiit just has a factory and pumps them out), many combinations of tubes you can use (by my calculations from data on Woo's site, there are 81 combinations) so you can find the perfect sound for your cans that you like. Jack at Woo will also sell you many of the tubes that his amps can use so you don't have to go running around trying to find them.
I would say that since he's asking between the WA3 and Schiit stuff he's on a relatively limited budget, nothing upwards or $500 or so. Can you comment, OP?
If I had my 'druthers I'd take the WA6SE personally, it's slightly cheaper and able to put out more power and current at all impedance levels compared to the WA2. Plus it uses "one" less tube, so tube rolling is cheaper.