Save the space! When it comes to detailing, (or any trade for that matter) there are a million companies out there doing their best to convince you that you need THEIR PRODUCT to get the job done right. When it comes to certain things, I feel it's all about the detailer's personal preference. I still continue to try different waxes, polishes, drying towels, and that's fine. DON'T waste your money on a "high-speed car dryer", because that's all it is- a waste of money. If you have a electric leaf blower in garage.... perfect. If not, go buy one. It's about around $50, and can be used not only to flush the sitting water out of nooks and crevices, but you can also use it to push the majority of dirt/dust out of the car before vacuuming. Work smart- not hard. I have a Toro electric leaf blower and it works perfectly for the job. I think some of those Metro-Vacs run for around $250. And and air compresser?What a waste of money and space in your detailing trailer/van.