It was only a matter of time till Randy4U weighed in to push Martins. (He's kind of like our village idiot). Anyway, you will be hard pressed to sell a Martin or any "name" brand accordion for more than its original cost. At least not in any reasonable amount of time. Well, maybe if you hold it for a few years while the US dollar continues to depreciate...
I recommend taking advice from players who actually know how to play. If you are local, go to some of the jams around here and ask those who play well their opinions on the various makers out there. Of the big name major builders such as Martin, Acadian, Falcon and Bon Cajun. My favorites are Acadian and Falcon. To me these two brands sound and play the best.
Now outside of these big names I would put Brian LeFleur's boxes in the same category as Acadians and Falcons based on sound, playability and looks.
Thanks for all of the help. I'm still looking, but for now I'm borrowing an old Mouton from a friend. Its in G and its pretty worn out, but it'll work until I decide what I want to get.