Yes i do own one, i was the one of the first ones to get it in June...
i am sorry, i won't be able to do a moose test... however i can assure you that suspension is soft, but occasionally can hear a bump when crossing speed breakers without slowing down, the noise is not heard when the car is a little loaded....
In short, if you don't compare it with Corolla or Civic... its a good small sedan... i am getting an average of almost 18kmpl, mostly use it for going to office only...
I live in Rawalpindi, on the old airport road or the rawal road, where my gli sways alot at even 60kmph, yaris can easily manuver the turns without a hint of loosing control even at speeds exceeding 80....
It feels smaller than corolla but we as a family fit in almost the same like we do in gli...
Yaris somehow accommodates luggage better than corolla in the boot, both can handle almost the same but i feel than Yaris has a better rack position giving it a little edge.... i have speakers installed in corolla's rear rack which hampers optimal storage
Corolla has a very solid feel, Yaris is also good, but initially does not feel as much sturdy, however, after a decent time spent i can safely state that they are siblings... after installing bigger tyres, spoiler, window tints etc. its equaly flashy...
It is the next best thing to a Corolla in almost a million less when you compare the top variants...