i have a etrex Legend HCX, and i have the newest upgrade in firmware.......i used to have a etrex H and it was more accurate and the pseudo-compass was correct. Im tempted in dowgrading or swapping to another brand. I went with garmin because it has the heading/bearing/compass but with the legend HCx it doesnt even work. Ayn Suggestions. (where can i get technical data on garmin units, what kind of antenna, chipset, ......?