The $40
DV Wonder firewire card is all you really need for your DV camcorder. Comes with editing software as well. Add it to your system and buy a couple big hardrives for editing with the money you save, you'll need them
The 8500dv is a great card, yes, but you'll be paying for alot more than you realy need IMHO.
PS, get the wifey something nice and some new jammies for the new little yikester, congrats!