Better is whatever gets the job done for you. The good news is that you’re talking about free SW, so you can try each variant for a week or so with minimal risk of lock-in, and compare. (Ultimately though, you should understand that the option that you take the time to get used to will probably be the best one.)
As for tool integration, I would encourage you try things like git, Capistrano, Rails generators and console, etc. out from the command line as you get started. The act of reading man pages and typing in the specific options you want will give you a better understanding of the tools. Then if you still feel that using a full IDE will give you some productivity boost, go ahead and do it.
BTW, I haven’t checked in a bit, but I’m fairly sure neither option you mentioned is going to give you git integration… Not sure my info is up to date though, so someone correct me if you’ve heard otherwise.