Also, consider not spending too much money on a converter - money that could better be invested in a new camera...
If your source were analogue hi-8, then most of the (Sony) cameras provide digital output (firewire) when playing analogue tapes, so you can import analogue directly into, say, iMovie.
(They also record digitally so you get a better camera thrown in too...)
I bought one of these on behalf of a friend for around 439...
Just a thought...