Chances of going to top Comp. Sci. MS program with CC UC transfer undergrad vs CSU undergrad

Why specifically do you want to go for an MA/MS degree in CS after finishing a BA/BS, as opposed to entering the workforce with a BA/BS or going on to PhD study in order to go into a more research-oriented career? (Yes, there may be tactical considerations for getting an MA/MS once you get to that stage, but that is years in the future for you. Such tactical considerations could include concurrent or coterminal MA/MS with your BA/BS that some colleges offer, or trying to delay entering the workforce to avoid an industry downturn, or entering a PhD program but deciding not to go the whole way.)

In terms of undergraduate preparation for research-oriented graduate degrees, UCs are more research oriented, but also have more undergraduates seeking research opportunities (and those who started as frosh may be able to get started on them earlier).