I really dig the ASUS Deluxe cards. They have good quality TV out. You can get a Asus TNT with i/o, an ASUS TNT2 with i/o, Geforce with i/o.
The Vanta is a cutdown version of the TNT2. A cheap GeForce MX with video out would be a good option, I've heard the eVGA cards are good for the price (~$100). You could sell your Vanta to help offset the cost, and use only one slot for the task.
If it was me, I'd pay the premium for the ASUS. But, I'm a tweaker...