What alternatives should I consider to a used Toyota RAV4 4x4?
The closest rival to the RAV4 would be the Honda CR-V because it can also be had as a spacious five-seat hybrid. The CR-V is the nicer of the two to drive due to a more progressive feeling brake pedal and consistently weighted steering that allows you to accurately place the vehicle in a bend. It'll be no good for towing a big caravan, though: its limit is only 750kg.
If fuel bills aren't too much of a concern, petrol models of the Mazda CX-5 have proven to be very dependable. So while you will fork out more in running costs, the CX-5 should be a very reliable choice, plus it has a plusher interior and easier to navigate infotainment system.