Agreed.
I have made captures from a DVW 2000, DVW 500 and a J-30 all to the same system via SDI and viewed them side by side. No differences discernible. The J-30 does have its timecode quirks and one sometimes finds a clip reported as having a time code break only to play it from a DVW 500 and capture it correctly. At other times, the same clip that is supposed to have a TC break has none when one retries. Very funky.
But for the price,the J-30 cannot be beat. And if you don’t have a central router or patch bay, it is small and light enough to carry from suite to suite. Very sweet. And a single BNC cable carries video and audio – digitally – into FCP.
So with a J-30, basic BM card, fast enough Mac, and storage to match, you’ve got a ‘online’ system that can give the big boys a run for their money.