Most of the time I use the same as Jack with the addition of Navtex in the right areas(Europe for example).
But we have also used Commander's Weather when we crossed the Atlantic and after a few days they contacted us (SSB Email) recommending we go further south, we did and after talking with other people who crossed at the same time it was the right choice.
We used them again for the crossing from Galapagoes to the Marquesas
and they recommended we head
further south to catch the better winds, but I stayed north anyway, more in the current
(following Cornell's opinion) and that time we did better than the boats who headed more south.
We are getting ready to go from Fiji
to New Zealand
this week and will again use Commander's Weather. But only as one additional source of information, but probably the one I will listen to most.
The cost for a forecast and routing suggestion is about $60 and we send in daily position reports to them. If they see anything they think we should consider they email us.
Opinions about using weather routers vary. Two people that I really trust their opinions disagree. John Neal from Mahina Expeditions always uses Commander's. Beth and Evans on Hawk never trust a weather router.
But, for $60 it seems like a great source of another opinion.