what does everyone here use for bridges?

what do u guys use for bridges, i was thinking of using senao 2611 cb3 plus in point to point mode, but 4 or less mbps may not be enough bandwidth for my needs. i have been trying to use thr nl3054 cb3 plus deluxe for about 2 months now, and can never get that damn .g stuff to work. was thinking of using .a but dont know much about how touchy and how much actual throughput i could get on that. anyone using anything other than .b for backbone bridges, and if so what?

thanks