Here’s a good website to learn about DVD camcorders:
http://www.camcorderinfo.com/d/Reviews&level_b=Camcorder&level_c=DVD.htm
You can look through the reviews and find the best DVD camcorder in your price range.

As far as converting Hi8 videos to DVD, here’s a helpful guide:
http://www.digitalvideoclub.com/basics/tapetodvd.php
if you only need to do a straight transfer to DVD – without any editing on a computer – then you best option may be to use a stand-alone DVD recorder. For example: http://hometheater.about.com/cs/toppicks/tp/aatpdvdrecorder.htm