If your are talking 10Mbps here, as you would with USB, then why NOT BNC?
Network gaming couldn't care less which method you use, or even
if you ran 100Mbps. Won't matter in the slightest.
BNC has many advantages over TP, with greater distance,
equal speed (at 10Mbps), and less parts (no hubs or switches)
which equal less cost.
Total cost to network 3 desktop PC's including all parts.
3 NIC's w/T's $15 each, total $45.
2 sections of cable, total $10 (+/-)
Done.
2 PC's only need 2 cards and 1 cable. Done.
Plus you CAN use your combo system for LAN parties
that have either TP or BNC. Can't do that with TP
only cards. Get a TP system, and you are stuck there.
Last of all, I went with BNC because that is what
everyone was and is still using for there home networks.
Perhaps if I just started networking in the last year
I may have gone with a TP hub, but why. Why spend the
extra to buy a hub or a switch when you don't have
too? For what some places charge for a switch alone,
I can setup a complete 10 station network with all
parts included.