Which winter car?? Audi 80/90 2.8 quattro or 2.3 20V quattro?

Hello, I’m looking for a winter car. First of all I have to say that I have never had an Audi and that I’m just heading for new territory. At the moment I’m driving an e36 320i and it’s known to be quite sluggish, for it’s not less than 10.5 liters in winter. For me there are 3 cars to choose from: – Audi 80/90 2.3 20V quattro – Audi 80/90 2.8 quattro – BMW e30 325ix (least appeals to me) my budget is €2000 and I’ve seen that there are already a few vehicles at mobile and ebay in this price range. What do I have to pay attention to when buying and which of the Quattro ́s would you recommend to me?? (In terms of performance/consumption, insurance/tax, motor longevity) Has anyone of you already regretted having bought a Quattro?? Look forward to every answer, even to criticism!! mfg Uli