I see Vonage is offering 2 different TA's - the V Portal and an recon Moto VT214RB. What is/are the merits of paying $10 more for a V Portal TA when a free option is available? I don't want the routing functions, can I run either one behind my Netgear WPN824 router? Is there a list of incompatible phones for either of these TA's? I am working towards dropping AT&T Callvantage and moving my number to Vonage. ...