Pyrandon, myself and our gang of thugs...I mean cohorts...I mean friends use OpenRPG and have been for over two years now. WotC's VTT has one thing (and one thing only IMO) going for it: Dynamic light sources. Of course, other VTTs (Battlegrounds to name one) already have that and others (OpenRPG) are working toward it already. Sure the 3d nature of it is great too but meh...just one more level of complexity that's can only add so much to the game before it becomes more of a pain than it's worth.
As to the Kitchen Table vs VTT debate: Kitchens win but when your players are scattered (literally) over two countries, that's going to have to be one BIG table!