Hi THere,
thanks for all the replies.
I went with the APIOTEK EC-0003D
it cost me $400 Hong Kong and seems to work fine. There were a few glitches at first like FCP frezing and causing bad crashes, but now seems to work ok, not sure why.
Everything is definitely faster than before with Firewire 800. Ive noticed more things are in realtime in my timeline now, and rendering takes much less time, so eSATA definitely worth it. eSATA II must be even better, but out of my price range at the moment.