Thanks for posting this. I pre-ordered a 600, and was having doubts whether or not I made the right decision. After reading your post, I've concluded I'm probably ok. Most of the features will not be necessary since I am an avid beach hunter. I don't need to move the tones around in 5 tone mode... I'd rather hear everything, I'll probably use the 50 tone mode.
Custom volumes not required, definitely won't be using VLF 20khz and 40khz modes... those would go nuts on the beach.
I'll spend the extra $250 on a good pair of water headphones.
Really looking forward to this machine. I've been using a CZ21 for water and an ATPro for dry sand, and sometimes I show up and the wet sand looks torn up and perfect to hunt but my AT Pro ain't gonna do it.
I only need this machine to replace my AT pro and give me some options in the wet sand. If it replaces my CZ-21 (I'm not counting on it, but I'm open minded), I'll be in heaven.