How would you descrive their flavors? Is Mesa too dark like the rest of their amps? And how would you describe Ictineo. I visited the site and there's a $12 shipping fee on mine. And I can do with that if ever.
Edit: Can the Ictineo drive a power amp as well?
You can most def drive a power amp with the Ictineo. Its a powerful beast.
To me, the Ictineo is rather tubey in some ways. It has a really nice way about it. The tone and body are more subtle but the voicing switches are really drastic most the time. In a good way mind you. I can't say it sounds like a tube amp, yet it does. Its just a powerful, clean, EQ/voice filled preamp. I can see if working very well in a lot of different situations in different musical genres from say a blues band to a metal or hard rock band.
The Mesa, I'm sure is great, I'm sure has that Mesa flavor. I can't really say though becasue I've never played one. It has some things the Ict doesnt, like a DI, an actual shelved (is that the right terminology) EQ. I dont have a lot of exp with Mesa amps either, but I have played a couple and I wouldnt say they were dark. I would think you could brighten up any amp, especially a Mesa, if you wanted to.
I'd suggest listening to some demos on the Mesa, they are out there. My opinion, unless you need a DI, I would go Ictineo all day. It's really musical and tight sounding, its powerful, has a lot of tonal option and variation. Looks really cool

and it has plenty of volume on tap to deafen an elephant. Again, I'm sure the Mesa is nice, but I think the Ictineo has more character. It's also very clean.