I had a chance to listen to the new ALO Continental V5 and the WA8 Eclipse. I preferred the Continental. The Woo was too warm and colored for my taste, and for it's size, it could use a little more power. With 3 tubes on, I was up around 8 or 9 on the dial with my super efficient Foster TH-X00 headphones. I can't imagine the amp driving anything that demands power.
The WA8 is remarkable to look at-- it's beautiful and the design is gorgeous.
But it is really large for a portable (think 2 jumbo sized Milk Duds boxes stacked together, and it runs quite warm.
The ALO Continental v5 is more neutral, runs cool to the touch, and is about the size of a Chord Mojo and will cost half the price of both the WA8 and standard Continental when it arrives in a month or two. I'd choose either the ALO Continental V5 (there's no DAC in it-- you need the Continental to get a DAC included) or the Cavalli Spark ahead of the WA8.
EDIT: Oh, I didn't bring up battery life-- the WA8 is about 3-4 hours. The ALO is around 10ish and Cavalli is hoping for 17 hours by the time the Spark is delivered.
Just my opinion, of course. I'd note that I am a Woo fan, I just can't find a place for the WA8 in my rig.