I think my vertical Husky has the same cylinder config as the kobalt you are looking at. Mine leaks oil a little and is louder than I would have liked. Mine is wired and plugged into 110 and I need to change that. They run like crap that way.

I have a Sears professional horizontal 26gal in HB. It is awesome. Quiet and other than replacing a belt / oil changes has ran really well. I have had for 12 years. If you guys get any of the models let me know the feedback. I wish you could here them run at the store. That would effect my buying decsion.