Why the Equinox, because I think about and research what I want for so long when it comes along there is no doubt or its been replaced with something better. I have used my x-705 for six years and have debated a 4th coil for 2 years, but I just couldn't put more money into it, the 705 is great, but not water proof, getting old, and still didn't get quite enough depth. I have been considering a new machine for a while, but each one I studied had a couple draw backs, often price and or weight.
I should mention I really really like the 705, so then I here about a new machine and for 3 months I check every last detail, hear and see that its similar to the x-705, (sort of) till it becomes a no-brainer, now I am just waiting for the email that says its coming.