We toured the wineries with friends who knew the area and while we did visit a couple of the bigger and better known places we tended to head for the smaller ones. We were not disappointed! While most of the wineries produce really good wine there are some small ones that produce stunning wines at much cheaper prices.
Also, chat to the servers, if they think you know a little about wine some of the rarer, more expensive wines come out from under the shelf for you to try.
Look for the vineyards as you drive around you will spot the smaller ones by the smaller signs tucked away.