I use a JLCooper Datasync 2. Works perfectly. I use MTC at 30 fps to sync 3 ADATs with Samplitude Producer and various sequencers including Cubase VST. Once it's set you never have to think about it. I don't think I've touched it in two or three years - maybe more.
You also, of course need a sound card that will accept MIDI. The Datasync 2 hooks up to the ADATs via the same cables used to sync the ADATs together, and the Datasync 2s MIDI outs go to your sound card.