From my understanding, Votto is not nearly as bad at 1B as he is in the OF, but he's still a below-average defensive first baseman.
The Reds have a $1.5 million team option on Hatteberg for 2008 -- the same salary he is making this year. He is very solid defensively (other than his dead arm) and is still a good hitter. Too bad Votto isn't right handed then they could platoon the two because I think the team wants to keep Hatte at that price. But since they are both lefties, Hatte will probably be traded or his option won't be picked up. You have to go with the younger guy next year (or even later this year), and this is coming from a huge Scott Hatteberg fan.