I was faced with the same dilemma a week or so ago.
New R or used R.
I went for the a 19 plate R, as I could pick it up within 2 days, instead of waiting 3 months, and I got an HP deal through my bank of only 5% APR.
The finance deal also played a big part. VW are offering great deals new, so depends if you can get a good finance deal for used.
With the added options on mine, I’ve probably only saved about £3000, compared to the deal offered through DTD, however factor the interest in, it’ll be quite a bit more than that over 4/5 years.
So it all depends on if you want to wait for new, or don’t mind 6 months old, and if you can match the APR offered at VW for new, which is 4.9%.
I decided I couldn’t wait. I picked my R up a few days ago, the last Golf I had was a VR6, so this one has blown me away