The problem with load-balancers I have encountered is that it will not bond the DSL lines and your performance is not good if you don't have equal speed lines. Here is a router I have installed in a few customer locations and it indeed provides what the company claims - true http bonding of internet lines: Mushroom Networks, Inc. or google "broadband bonding" for their routers. I'm not a big fan of their mushroom based branding of their products, but I have to give it to them, their bonding routers sure work...
