Yep, ive broken a couple st croix too.
My favourite ice rod for larger fish is an old mitchell brush'n rod. 36" of power, and I cant break it if I try. For pannies, you need a whole different set up...I like ML, because I break the real light rigs all the time. I use a slip bobber for the light biters.
P.s....spend some coin on the reel. its the reel that will lose that big fish. The rod will be fine, but a stiff, frozen, reel that doesnt work well, and has a cheap drag is good for nuthin! I use my quality reels soft and hardwater.
S.