anything not from grandstream...
Sorta kidding, but i really did dump everything from them except the gateways and atas.
It kinda depends on how you want to deploy the phones, if you want to run copper then use a gateway, they have a couple of good and fairly stable models. If you want voip phones, look at the yealink t19, t40s and polycom has a new really simple phone but the model escapes me.