Hi Joe,
We've had good experience with Edwin Obando at WinMovers
This is from the Go Dutch web site
Costa Rica Relocation We recommend that you contact Mr. Edwin Obando at Winmovers. We have worked with them for over 15 years and they do a great job. It is important to contact him before you even start packing since you’ll have to pay import taxes on your household goods when they come into the country, but he will give you the full instructions so that you pay as little as possible. He will also tell you which freight forwarder in your hometown to use, to make it all easier.
winmovers@racsa.co.cr or call +506-215-1585 or fax 215-2534