I fly a PA28 and Cessna 172 (VFR) and in my view Sky Demon flight planning is brilliant.
I put all the routes in beforehand and on the day in question just input the flight times and a plog is produced, which includes every frequency I could possibly need, bearings for each leg together with times.
If it works for me it'll work for anyone!
Oh, and if you have any questions you can ask Sky Demon direct (to which you'll get a quick answer) or there is an excellent forum.
I don't think Airbox is anywhere near as good (and I've got both).