For panfish I like P-Lines Floroice line in 3 lb test. I would use 2 lb but some of those green carp have a tendency to break it too easily. I used to use Trilene’s cold weather line, I liked how flexible it was in cold weather but it seemed that dark blue color affected my bite ratio.
I like to use the 2 # test Berkley Micro Ice line for gills & crappies. I have tried the Berkley Cold Weather line also but still prefer the Micro Ice. Using 2# test line can be very effective especially on days when you have to coax the big gills into biting.
Fireline, i used alot of different line in the 2lb class but ended up breaking off alot. So i tried 4 lb magna thin, it has low memerory and works very good so thats what i use.