I don't care what kind of booth you have, sanding everything good and getting stuff straight and then masking stuff off or removing it still takes a bit of work and time. Then after if you have to buff, thats more time.Having a nice booth sure makes things easier though when you don't have to worry about overspray floating in the air, and not having enough light. Most places I worked had homemade booths, and the dealership I worked at had a crossflow but it was worse to paint in then the homemade ones. The only time you could get a pretty clean paint job is when it was raining outside. The only nice one I painted in was at techschool. Use to be a crossflow, and they dug out the floor and made it a downdraft. About the only thing a baking booth is gonna save time on is drying of the paint. Then the car can be delivered or buffed in a matter of hours instead of 16 hrs to buff when air drying.