Update:
Well after quite a bit of research and testing we went with MicroTik. When it was first suggested I felt like an idiot for not thinking of them earlier as we've used their routers in the past out in front of the DMZ. They recently rolled out a new 3x3. They were back ordered for a while, but considering how long we've waited to find a good solution we decided to wait on them.
There was a bit of a learning curve and I'm pretty sure you could operate the space station with one of these things, but they pretty much seem to do it all and much more. We started rolling them out a couple of weeks ago and as of today we have them at about half of our installations. By this time next week we'll have them completely deployed at all locations.
I'll know more in the coming weeks, but so far range is good, linking with other devices supported, MAC filtering works very well, and throughput is awesome.
Update: While overall the device has more options than we'll ever need, the one place it's lacking is in sustained throughput. I feel like the device has potential, but unfortunately support is severely lacking. We bought from ispsupplies.com (and actually paid a little more than I could have gotten them for elsewhere) because we wanted to do business with a local company where we could build a relationship. Unfortunately, as soon as they made the sale, what their "engineer" couldn't figure out in the first 10 minutes of a call turned into, "Well if you want to look at it further, troubleshooting is $180.00/Hr." "No thanks, we'll send them back and buy from someone else."