Why don't you hear them yourself and do a review/comparison for all of us? :D
At that level, I think it comes down to personal preferences and system synergy.
Here's what Hooper wrote:
"Yes, there are amps out there that do this or that "better" than the 108."
Here's what Panorama wrote:
"As far as the DartZeel, I liked what I hear from the Tenor compared to the Dart I had in my room."
To me, the word "best" means that nothing can beat it. If another amp does just one thing better, I would see how one would prefer it over the Dart. From my limited experience, I don't think a solid state amp can ever do exactly what tube amps do best in, and vice versa.
I think from a marketing perspective, if Dartzeel ever comes out with the option of Silver or Black faceplates, it'll sell a lot more! Right now, I know what my girlfriend would say about the amp. :P (not that I'm a pushover or anything *cough*)
If the Dartzeel distributor ever drives up to Vancouver, perhaps he can bring one for me to audition :D
Anyways on with comments from people who actually know what they're talking about heh.