i would agree... get the N66U again.
I think the issues you were having were all centered around the previous broken firmware.
I have the N66U (not bridged mind you) and love it.. blows EVERY other router (even up to $100 cisco/linksys ones) out of the water.
There are many others on here who have used the N66U and some of the higher ones with the 150 and 250 service, bridged, with NO issues since the firmware update... no needing to reboot, etc.