Really? My Wrangler, and later the TJ (when they brought back the round headlights) had great heaters. Insta-heat, as soon as you crank over the engine.
The Toyotas I run are dependable and rock solid on and off-road, but you need to drive them a couple of miles before anything resembling warm air starts to flow.
So-so heater with one outlet on the floor above the transmission hump and a ragtop, with cloth doors on a wire frame and thin clear vinyl windows all around...brrr.