What community college? Some of the CSU's and UC's have automatic acceptance programs if you maintain a minimum GPA in the required classes. I believe a signed agreement (contract) is also required.
By no means is this a knock on the UC system, but I've noticed that those who graduate in engineering from CSU's or either of the Cal Poly's have a much easier time finding work in the practical world. UC's seem to prepare many for staying in academia. I have a boss who graduated with a B.S. in mechanical engineering from UC San Diego, and who's father works as a professor at UC Berkeley. He's pretty opinionated on the issue saying it seems UC's tend to teach learning for the sake of learning. Where he to do it over again, he said he'd have probably gone to a state school or changed his major to business.
With all that being said, if you were to put a UC graduate against a CSU graduate (both with the same degree and all other aspects being equal) for a job, the UC graduate may be the more likely one to get it.
Both UC Davis and Sac State have very good engineering programs. Berkeley too. Any of the UC's will serve you well, while you may have to be more selective about what state school. Both Cal Poly's are amazing. Have you thought about joining the Formula SAE program at whatever school(s) you're looking at? Might be a deciding factor.
Not all of this is hearsay, because I have spent enough time at my community college to be a doctor on any other "normal" track. Many of my observations come from seeing many of my peers from high school graduating from their respective universities. I know most who are now working, and many who are back at home despite having some very respectable degrees from "good" schools.
I guess my point is, if you plan on staying in academia, go with a UC. Otherwise, a M.E. degree from almost any accredited school will serve you well. In the end, experience holds more weight than what university you graduated from.