So, you're load balancing multiple connections but are you load balancing to routers or modems? Then there's also types of connections (DSL/Cable/T-1 or T-3/Bonded T-1 or T-3/Fiber) to consider. Highest I've seen DSL is 6Mb. Cable has gotten as high as 20Mb. Fiber I've seen up to 50Mb but those are expensive. Then you've got your T Carrier circuits which are the most expensive, but yet the most efficient and most stable (T-1 is 1.5/1.5 and T-3 is 3.0/3.0). So, just based off this it's easy to understand why I'm a bit skeptical.