Is Vista HCx worth extra $50? in GPS technology and devices Posted March 1, 2011 It's nice to have a compass that works when you're not moving, as for being worth 50$ more, that depends on you and what you're using it for. I use mine for work where I may have several hundred sampling sites and I'm carrying alot of gear. It's nice to be able to stop and get a reading then proceed to the site. I've also got a Dakota 20 with a 3-axis compass and don't necessarily find it better than the Vista HCX 2-axis compass.