I'd go with Rollins, but you're fine picking either.
Rollins and Jeter are equal in runs and AVG (I think Rollins AVG will increase this year and be a .300 hitter.) Jeter will hit about 5-6 more HRs, and drive in about 20 more RBIs, which is significant. However, Rollins will steal 20-30 more bases than Jeter will, and that's where Rollins takes the lead for me.
If you plan on drafting several 15-20 steal guys, I'd pick Jeter because of the higher RBI totals. For most teams though, take Rollins.
...Boston papers now and then suffer a sharp flurry of arithmetic on this score; indeed, for Williams to have distributed all his hits so they did nobody else any good would constitute a feat of placement unparalleled in the annals of selfishness. -Updike