I am trying to get linked in to a group in Denver, but from my QTH in the mountains, it is around 30 miles, mostly line of sight.  I was wondering if anybody could advise whether the AirGrid AG-HP-2G20 or a Bullet M2 with 20+ dB antenna would be the better choice.  The Airgrid seems like a very cost effective choice, but I am probably pushing the performance limits.  From here there are several mesh nodes that would be within a few degrees of each other, so I figure I could see many of them with a parabolic antenna, and perhaps hear them too?