Strongly leaning towards getting the dragonfly 4 with navionics for my kayak. Anyone have any experience with it? I've heard some say they have issues but that's all been from guys who don't have the unit everyone who has it seems to love it and those with issues said their customer service was top notch. 

I have an older Dragonfly (not the Pro) and love it.

I had the 5 pro. Had a lot of problems and ended up with a different brand. I won't mention new brand because I don't want to start this brand is better than that. Just giving you my experience with my raymarine unit.