The last Fit seemed flimsy, unsophisticated and noisy compared to the Fiesta. Handling was roughly a wash.
With the new updates and the addition of the ST, the Fiesta would still be my go-to in this class. If space was critical, I'd step up to a Mazda5 or Rondo.
The Mazda 5 and Rondo are significantly bigger than the Fit and significantly more expensive base model vs. base model, but the 5 GS is only $700 more than the Fit EX-L but you a few features: Bluetooth(1), leather wrapped steering wheel(1), heated seats(2), SiriusXM(2), heated body coloured door mirrors with integrated turn signals(2), fog lights(2), moonroof(3), leather seat surfaces(4), navigation(5), push button start(5), lane watch(5), and lounge mode seats(5).
(1) GS with Convenience Package, +$1055
(2) GT, +$2810
(3) GT with Moonroof Package, +$3705
(4) GT with Moonroof and Luxury Packages, +4600
(5) Not available
The 5 does come with things the Fit EX-L doesn't, like standard rain sensing windshield wipers on the base GS trim and also HIDs in the GT trim.
Even then, on an old Mazda 5 forum I was on, it seems that a number of people cross shopped the Mazda 5 and Honda Fit.