Just a quick note. Yes, the HCX is very good, mine never loses reception even in dense trees and in steep valleys.
I'm probably alone, but I quite like the TOPO maps. Sure they don't have all the paths and bridleways, but then OS maps don't have all the paths either. They do have contours, all roads, and thousands of POI. I have the talkytoaster maps, and they are OK if you live in a popular area where someone has put the information in. My in-laws-in-sin live in Banchory, and on talkytoaster half the town doesn't even exist!