[Oracle]

The difference is the motor manufacturer, i.e. Tecumesch vs. Honda vs. unknown.. If possible go back to the store and find out exactly then buy the better one, and for what I know nothing beats a Honda cause it has a a real crankshaft and also you can just replace the whole motor when you're done and everything will fit perfectly.

Those big tanks don't forget to release all pressure at the end of the day cause they get a lot more condensation than a small tank that will rust it faster and turn your expensive tools to garbarge... (you can run in-line driers and oilers too)