When we fly the 355 it soaks the vibes up in turbulence. The 135 however, is a different beast. It translates virtually all movement thru to the cabin. There have been occasions when I have had to turn back because the 135 was shaking too much, when the Squirrel would have simply wobbled a little!
The pucker factor is well and truly alive in the 135 in "tham thar hills"
The converse, however: +3.5g and -1.5g
If only we could explore those limits now and again