I’m new to camcorders as w

I’m new to camcorders as well and looking to begin filming motorsports. We are looking to do live broadcasts over the web and have started using miniDV cameras – Sony DCR-TRV33 and a Canon ZR960. We are looking at the Sony DCR-HC52 to add to our cameras but we would also like to look at the possibility of upgraging to HD cameras along with Flash Memory camera for taping interviews. What are your opinions on selection for upgrading our cameras?