We'd recommend the 2WD model. Most buyers won't need 4WD - a set of all-season or winter tyres will make a surprising difference if you're concerned about cold weather. You could hold out for an AWD model but, in the current climate, it's difficult to say how long that'd take. With factories closed, a shortage of new cars might actually see fewer deals being offered on new cars. If you've been offered a 2WD RAV4 at a price you're happy with, don't hesitate in going for it.