well, good to see competition in the Amiga market.
I had a mediator at one time...though I don't own an amiga anymore. I never liked that you have to go through their support department to get updated drivers, instead of just downloading them from the internet in real time.
It's just a level of service that you get in the PC world, that people have come to expect. That's not to say that their support department didn't get me the updated drivers in a day or two...they did. It's just that why can't you get them that night, you are working on the thing, instead of waiting a day or two. Why oh why, they are in the hardware business anyway.
That's why I would still take a hard look at the prometheous.
I do like the very professional website and snazzy ordering system (along with large product range) of elbox too.