Load Balance 2 FTTCs?

I'm about 850 metres from the cabinet, and get 34Mb down. Much as it would be nice to have FTTP, it would have to be FTTPoD and even when it is available, the pricing is well past silly.

So the idea of adding a second phone line and a second FTTC connection seems like a possible plan. Much cheaper than FTTP and vastly cheaper than FTTPoD.

But is there a sensible (and affordable) way to combine these to get a sort of load balancing? I'm perfectly happy with the 34 down 7 up speeds that I get, but I don't want multiple connections to slow it.

A user on here - Ignitionnet - uses one of these http://uk.tp-link.com/products/details/?model=TL-ER5120

Yes indeed. Apparently this can do it too but has some firmware issues: http://www.asus.com/Networking/RTAC68U/

A Draytek would work too such as the 2860. Use the built in VDSL and an external modem into the Eth WAN port.