As an owner of many such cars in the past I couldn't recommend them enough. For me, it is the Golf everytime, it's just such a reliable tool.
Best place to look for them is specialist websites like Volkswaizard, 4 Star Classics and 80's Emporium.
Try to buy the most desirable model which is the 3dr with the 16v engine. Quite a few of these cars have been tinkered with over the years but as long as they are in the most part standard they should be good.
If you really want to splash out find an Edition one G60 (supercharged 8v) but these fetch silly money in good condition.
What is your budget?