Well I personnel have used the yamada for a few years but just got the G57 Flo Jet air pump from pressuretek, just started using it. I put a post about it a few days back, so far so good, 10 gpm pump, only needing 2-4.7 cfm for operation and the air psi is 20-100 psi. It pumps like a champ and is only 211.00. I can not speak for durability from experience because i just got it. One guy posted on my thread he has been using his for a month and no problems. Good luck on your choices, I will post reviews and pictures once I get it redone and put in a metal cargo box to protect it better plus I will have a back up just in case inside.

2-4.7 cfm for operation and the air psi is 20-100 psi. If that's the requirments then it doesnt have to be that big of an air compressor

Air pumps will "work" with just about any CFM of air, but that don't mean they will acheive full flow! Better look at the air requirements again on that FloJet, to be sure the rated 10 gpm flow is acheived. I don't think it will be at only 2 to 4 CFM air.

I bought a fat boy pump and a 5850 pump. the 5850 pump went out on me in a month, but the fat boy pump wow it is great and still working, this pump has really paid for itself. I plan on getting another if not two. I get about 30 plus ft of spray and thats all I need for the jobs I am doing.