thank you for the answer. I defenitly have to find that recent topic on MF scale...
the 500 board seems to be a good choice of board : cheap (and cheaper to send to france), powerfull, quiet, and small. But of course if a superbowl board (same as miggle rosebowl I guess ?) or even a 620 is more in scale, we'll see...
the goal is to build a solitaire league of arena football with fab5 figures (cheaper and faster to paint than 22 minimum athletes pro football teams), and of course to continue my french miniature football crusade with a new fast paced ruleset
the last thing is to have a smaller metal board for my own training and tweaking, of course, because my big 42" fiberboard gameboard is quite loud and...big