I found our A models (pt6 & Garrett) are much more stable at slow speeds just above stall and way easier to land short compared to our grand. Off the runway the A's are comparable empty and the Garrett has a slightly shorter take off as weight increases. As for ice, a booted 675 has no business in it, the Garrett's are completely different animal in ice.
Text book ice only building on the boot, the Garrett has the power to keep the speed up at 12k to keep the boot clean.
Clear ice getting behind the boots, well it is still a Caravan airframe, but the Garrett takes a scary situation in a 675 and gives you more options/time to get out of it.