I'm a new Kubota 900xt owner and have added some Kubota accessories. I got it with the glass windshield, added a Kubota heater and driver's side wiper. I checked with my dealer; a hard door kit costs about $3000 and comes with the glass windshield (which I wouldn't need). I checked some sites with aftermarket kits for cloth doors with marine vinyl windows for about $500-550. Are these any good for general winter use down south? Which manufacturer makes the best soft door product? Any advise is appreciated. Thanks!