I'm starting in January and would like to mail some heavy objects to myself, like a desktop PC, laser printer, scanner, heavy textbooks, five-foot-high Polk SDA-2 speakers, etc. (all right, forget the speakers). What's the best way to do this? USPS? FedEx? DHL? Freight forwarder?

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Brain surgeon to another: "Hey, this isn't rocket science".
Rocket scientist to another: "Hey, this isn't brain surgery".

FedEx is cool and so is UPS. Either one I would recommend.

Fossildoc, try amerijet.com...so much less expensive than the others (fed ex, ups). Another one is Tropical Shipping (I know they ship to some islands, not sure about Belize).

I would recommend Amerijet, I use them every semester, not once did I have aproblem. Shipping is fast, resonable and everything arrives in one piece. Your boxes will clear customs in Belize and be put on Tropic or Maya air and arrive here on the island. It's really simple.

If you need more info, please ask.

Whatever you do dont write the amount you insured the package for on the package itself. They might tax you a lot.