I am going to purchase an air compressor from Harbor Freight in the next few days and here is why... I don't have the money to purchase a "real" name brand high dollar compressor. I know you get what you pay for and I am OK with that. I have 3 immediate projects to do with the compressor and if I can get these done and it craps out right after, I believe this $180 purchase is still worth it as opposed to paying someone to come to my garage/house. First, I need to winterize my sprinkler system in the yard. Second, I have some bolts stuck on the jeep and need to try an impact wrench to get these out. Third, I am going to sand and repaint the body and frame of my jeep as I am in the midst of a frame off resto. In all, compressor will be used for sprinkler blow out, impact wrench, sander and die grinder, and if possible a sand blaster. I know I am not getting a compressor large enough to do all this continuously so I understand and expect to have to take time to let the compressor build up pressure every once in a while. I AM OK WITH THIS.
The Question: Here are the two compressors I am between getting. Major difference is the 10 gal tank vs 21 gal tank and a .5CFM difference.
4.7 @ 90PSI
5.8 @ 40PSI
5.3 @ 90PSI
6.2 @ 40PSI
So... Should I opt for the larger 21 gallon storage capacity or for the higher CFM rating? In this case, higher CFM means lower storage capacity. So for what I need to do, which would you recommend?