Best navigation devices / apps?

Passed my Class 1 a couple of months ago and have been doing some agency work here and then (mostly trunking), alongside some tipper work in a 4 axle rigid for a local aggregate company doing quarry runs.

I'm greatly enjoying it so far, but what navigation apps / devices are drivers on here using? I've been pretty satisfied so far by an app called Road Kings, which uses Tomtom navigation with accurate height and weight restricted roads.