I took about 7 cars for a test drive about a month or two ago, although most of them were between $20-30k. You could get a good deal if you go shopping right near the end of June though (End of Financial Year Sales).
Mitsuibishi Lancer VR Sportback - Great car mechanically, looks nice, interior was very plain though
Subaru Imprezza - Nice interior but very slow
Honda City - Also pretty slow, quite roomy for what appears to be a small car from the outside
Toyata Corolla - steering was very light, nothing else was overly interesting
Ford Focus - pretty boring
Mazda 3 SP25 - very zippy, don't like the look of the front of the car, nor do I like the interior. Also very expensive
Volkswagen Golf 118 TSI - Great interior, looks alright, still accelerator pedal (not sure if that changes in Sport mode), but also very powerful. Also expensive, but a friend has got one cheap for me, which I might get in a month or two.
Ford Fiesta - not bad, but the Automatic version is underpowered.
If you can, try to get a car with ~110kilowatts or more. Those with only ~80 are a bit more sluggish, and since you're a member of this forum, I'm going to guess you want a bit more oomph than that :)
If I had to give you a shortlist to check out - I'd say:
- Volkswagen Golf Trendline (the cheaper model) or Polo (never looked into it, but VW make good cars, so check it out anyway)
- Mistubishi Lancer
- Ford Fiesta
Not all 2nd hand cars are unreliable, if you look around yourself to find a couple of good cars, you might be able to convince your Dad otherwise.