Two notes on the HCx and Cx units.
I'm buying a second now, as I decided to take mine on the lake one fateful day.
The lanyard connection point is weak. While riding a jetski and navigating, the thin attachment point snapped, leaving the lanyard around my neck, and a series of ripples in the lake where my GPS was steadily making its way to the bottom.
I strongly recommend getting a neoprene float case, pelican bag/case, etc... if you plan to use it near deep water and possibly connect the lanyard through both the back screw point and lanyard attachment points.
As another good link:
http://www.anchorexpress.com/product_detail.cfm?pid=9004
They have the Vista HCx for $235.99, free shipping.
Saved me $100 between difference in local store purchase price and tax.
