Depth finders

If you had a choice which one would you choose(these are all used units)
1)lowrance elite 7
2)lowrance hds9 gen2
3)hummingbird 997c

2 - Bigger is better, and when you want to add other electronics, I think this is the newest that will still be able to network.

I've been a lowrance guy my entire life, I honestly would go with the hummingbird, I'll be moving away from lowrance later this year. My experience has been- Their [censored] just doesn't last more than two years before troubles start.