Too small for me, I'd be downgrading enough from Golf for Fiesta without having to drive a portable matchbox!
Ford always seems the more reasonable price, I'd like the Polo GTI but from watching reviews and such, the fiesta seems more of an enthusiast car.
Portable matchbox that be quick and nimble around country roads, don't see how the fiesta ST could be more enthusiast car than the GRMN when the Yaris is tuned and modified by Toyota GRMN out of the box.
The Fiesta ST would appeal more to car enthusiast as there will more likely be more out on road and people will modify them but if that isn't your cup of tea then on paper the Yaris would be seen as the out of the box enthusiast car that is ready to be taken out to be driven fast.
Of course if that is if you're after something newish price, used market as mention in my previous post there are plenty of options to choose, i'm sure the previous Fiesta ST is fun car to drive(not driven one) but of course be open to other alternatives.
You could even get a Focus Titanium X 1.6 which has the same engine as the fiesta ST I believe?
I know you can get bigger powered car for the money than the Yaris but the price is because of the limited release.
The debate reminds me of the whole why buy GT86/BRZ when there is xyz car that is faster, they offer amazing driving experience and car is already been pre-setup in mind of enthusiast.
All the hot-hatches are still based on their normal hatchback counterparts(This obviously applies the Yaris aswell) while the GT86/BRZ is its own one platform.
Despite owning a Mazda 3MPS which is faster than GT86, the most fun and pure driving experience i've had was in my GT86.