I had 18 months on the J-41 about 6 years ago. I cant remember too much bad about it to be honest. It is lovely to fly and although compact, it is reasonably comfy ( i am nudging 6'1" ).
It is noisey though and going for pee in flight is interesting as effectively you are in the back galley area!
I never had any problems in icing conditions as the boots seemed to work quite well. The only problem I can remember was the pod smoke warning going off if you got deiced and some got into the pod....it would start to evaporate and set of the detectors!!( well thats what I was told but I am sure someone will come along and prove me wrong!!).
Good luck with it...I actually miss flying the thing!!!!
JJ