You didn't mention how many passengers and/or baggage you want your plane to hold. From those numbers and while not IFR approved, I'd suggest you get a Sling 2. You'll get 10 hours endurance, fuel burn rates between 15 and 20 L/h and a really neat aircraft to fly around. If you need IFR and can shell out a few extra dollars, I'd go for a used SR20.