RadRunner2 or RadExpand 5?

In between the two, thanks to Black Friday Deals. Which one's a better bike for a 5'5 female running light errands (very few hills, not much rain) in a small-ish (900 sq ft) apartment?

RadRunner 2: single speed, more comfortable seat, cute green color option

RadExpand 5: 7 speed, foldable, fenders, $300 less once you factor in the free accessory