having owned the 68C and the 4X Elite ice packs I can tell you this... I sold them both and bought a Marcum Showdown and will never go back to Lowrance for Icefishing. The showdown is so darn simple and easy to use with 1/2" of separation I can see the fish above and below my jig. I can see the fish come up to the jig... I played hell trying to figure out everything on the Lowrance. I thought the 4X Elite with the Chirp Technology was going to be the answer after using it on open water and jigging with 1/2oz jigs.. was easy to see, but with Ice Jigs it was not only frustrating, it was disappointing after dropping $125 on the Ice Pack for it.
I had an opportunity to purchase a nearly Showdown 5.6 like my sone uses and felt like I had found the golden egg. No more frustration or disappointments
JMO