Not the answer you are looking for… but when I needed to capture DV I used an old Windows computer that had native firewire built-in. Another option for you is to go analog to PR422HQ. The stability of going analog may make up for any small loss of image quality. And the DV codec is not supported on Mac anymore so you will need to convert it eventually.
UPDATE: I went back to the DSR-1500 from the PD-150 and was able to bring tapes in ONLY in QT. The recording does stop on a bad or dropped frame, but maybe once or twice per tape. Not a big deal. FCP and iMovie both still chop it up. Premiere doesn’t see the deck.