Looking for input on a new larger-screen (7" +) size GPS/depth finder combo. Looking for a good, solid, RELIABLE unit that's user-friendly for a non-techy guy like me. I have a budget of about $1,500 max. I've been a lowrance fan for years but have heard other brands have become more popular out there so am open to input. Also, I've seen a lot of hype about the new side-imaging sonar but have never experience them first hand. Anyone have any real-world experience with this technology and would you consider it worth the extra cost?