I have done a quick A/B between the two but i'm going to hold off on any further comments until the Valab has fully broken in. The reason is the Valab has changed some during break in as expected so any comments at this point may not apply after more break in. I will say that the Valab has very nice dynamics, it can punch out a tune when asked to, nicely balanced from top to bottom as I previously noted. On the minus side it developed a bit of edge to high guitar notes, also a slight overlying grain/hash which hopefully will go away with break in, I'm already noticing guitars are starting to smooth out. These are minor nits at this point and I still think the Valab is a steal at the price.
I spoke with Kevin at Valab and inquired about the output caps, he said yes they can be replaced and you will get an improvement, they are the 2 blue caps located next to the clock crystal, I'll have to pop the lid but it looks like they are 10uf caps, quality caps may not fit in the space available, I'm going to look into this further.