if you can get B5, B20, i'd do it. Doesn't cost too much more than regular #2, adds some lubricity, runs a little better(on my truck anyways..)
When you first run bio for a while you'll have to change the fuel filter after a bit because it will clean out some of the crap in the system..
We got Sequential Biofuels here, and the offer B5, B20, and B99... They've got a jar of B99 sitting ontop of the pumps so you can see if its gelling at the ambient temp..