I work for a logging company, designing roads and making maps. We use silva's and some called nexus by Brunton. Any good compass should have a way to set your declination. Most compasses come with a mirror which can be used as a signalling device if one should ever get lost. I have over 15 yrs experience working in the wood and will not leave home without one. We now use a trimble for most of our surveying recording and measurents but a compass is always handy to have. One basic rule. ALWAYS TRUST YOUR COMPASS. IT DOESN'T LIE.
Have fun in the woods