Yes, and we suggest Mikrotiks. We're actually about to launch something quite cool in this respect. Pre-configured, and no learning curve for you. We'll do it all for you, and keep the firmware and scripts that control this updated at all times for you.
The TP-Links do offer a very dumbed down version of QoS like this and you can dial multiple PPPOE connections, and switch routes, but manually.
Sorry about the thread hi-jack, although which Mikrotik's would be recommended for VDSL?