Tim:
If I were you, I'd look for a Sony D8 camcorder. I know for sure that you can get a Sony Hi8 camcorder for less than $300, and those are fine, broadcast-quality cameras (I have a 5-year old one), but probably no firewire capability. The D8 is Sony's upgrade for Hi8, & it tends to be cheaper than Sony's more upscale DV models, and it has firewire. You might also look at entry level DV camcorders from Panasonic & JVC. If you are not in a huge hurry, you might was a few months & see if DV camcorder prices drop in price more as new camcorders with mini-DVD recording capability catch on.
Pay close attention to the ads AFTER X-mas, & browse websites like Crutchfield to do your homework before you go in for the kill.