Cheapest way to ship large speakers?


I have some towers that I want to ship (about 6 ft. x 2 ft.x 2 ft. boxes). Anyone have a good source? UPS and FedEx want $1000!!!
jschatz
With Fedex and UPS, you run into "dimensional weight", which may be 3 cubic feet or some maximum height (40"?) and can easily double the costs. Found that DHL is easier and cheaper on bigger packages. Although, not sure how cooperative it is on the receiving end for home delivery. Couldn't be any worse than Fedex.
I shipped soundlab m2's from Seattle to southern NJ
on united van lines;no problems encountered at all.