Cabelas has a Garmin 73SV for $549 right now. I bought one to compare to my 998 since I've heard Garmin is doing great things. I think their 2D sonar and Down Imaging is better than my HB, but the SI is not quite as good at marking fish. Structure pops very well on SI, but the fish marks are harder for me to pick out unless they are right under me.
But for regular sonar, down imaging, and mapping, it's pretty great! They have new models coming out with chirp, and also lost a legal battle with Humminbird recently.
I knew that You are a gracious and compassionate God, slow to anger and abundant in lovingkindness, and one who relents concerning calamity.