I have a Gusto that is 85 x 4.5 x 35 and it works great on a med to med/dry house shot.  I wouldn't call it flippy but very strong off the spot. If the Uncaged has the Exile cover (or Radicals version) like I hope it does it should be stronger overall than the Gusto and probably not the best choice for a med/dry condition.

A lot of it will depend on rev rate, axis tilt and rotation also.  If you are low rev player either would probably work on a somewhat drier condition.  If you are a med to high rev player I have a feeling that the uncaged will be more aggressive than the Gusto.  The Untamed will have the second weakest cover of the Yeti series and if the Uncaged is similar to the Exile cover it will be the most aggressive.  Maybe Newguy will chime in and give some more inside info.........I am suspecting the Uncaged to have the strongest movement between any of the Yeti's or the Gusto.

The Uncaged is the biggest skid flip in the line. The Gusto is about as skid flip as you can get with an assymetrical core. So the Gusto rolls up sooner. We do not use the same formulas as the Brunswick or DV8 lines, so its not the exile cover, it our own formula base and some additives.
My opinion is the untamed is longer than the unleashed but not a long and sharp as the uncaged, the Gusto is not as strong as the Reax Version 2 pearl and is ideal on medium to dry lanes depending on the surface, ball speed and rev rate. The Uncaged is a backend monster and can be tweaked to go even longer and flip even harder.
Hope this helps.