I don't have the Garmin Striker plus 5 Ice Bundle, but I have the Garmin echoMap Chirp 95 and the panoptix transducer. I bought it for the boat and for ice fishing. Both have similar features. The mapping is good. I am still tinkering with that option as I have detailed maps drawn but I have to make more passes than I thought I would to cover a larger area. The graphics of both garmins are great, and you can change the background colours which helps as well. I've taken it out once this year ice fishing, but we used the panoptix so I can't really comment much on the flasher portion yet. I have tinkered around a little bit with the flasher mode when I had it on the boat and it seemed to work well.
If you are buying it for both summer and winter, garmin striker plus 5 would be a good option. Garmin is a great company to deal with. I was planning on buying a humminbird sonar for the boat this past spring it was just a matter of which model as I have the Humminbird ICE 45 and love it. Then I watched some videos about the Garmin echoMap Chirp with Panoptix and looked into that for the boat and for ice fishing. That's how I have a Garmin now and I am quite impressed with the graphics and the amount of technology built into such a small unit.