I've never driven a vr6 auto, but i have talked to people who have, and all of them said they really like it, they said the box is well matched to the engine and is very smooth. Only down side is that vw are not known for good auto boxes, so if you plan to keep the car for a long time (above 100k miles) you might want to budget a few hundred for a gearbox rebuild or similar in the future.
However that's all just hearsay, not my experience.
The VR6 on ebay looks pretty good, excellent history, not sure about the wheels or the beige leather, but that's just my taste.
If you're really interested, get in touch with the guy and go and see it, give it a long test drive and make sure you give it some when it's warm; really work the auto box at all kinds of revs.
And also try and drive a manual to get a comparison.
Good luck