The Forces pieces are the better buy. But no one that I know of makes better soldiers than K & K. I believe that K & K pieces, which are very heavy traditional die cast models, come in a larger scale than Forces and (I know they do in comparison to) WW Brittans.
Here's some links to some good sites that carry K & K, which (legally or illegally) won't allow direct price competition. The Sierra site has free shipping:
http://www.treefrogtreasures.com/
http://sierratoysoldier.com/king_&_c...y_soldiers.htm