300 is rock solid and what I have used for sites and my own home for years, really my goto router but discontinued now
I would not recommend the 110 as the 110 series is really made for people with minimal devices on their network and not for home automation setups
the 310 series I have at home, while I am a big fan of araknis, I wont sell the 310 until all their bugs are worked out, currently I have one at home and been running it since its release but I have had several issues. I normally set my routers to reboot every sunday at 2 am, but this one I have to set to reboot every 3 days otherwise it locks up on me. internet just cuts out. I have been on with support several times, they have tried several different settings, but still it would lock up like clockwork every 2 to 3 days. I have 2 internet services, I have fios and I have optonline, didn't matter which service, what settings, etc.