I have tried setting the front speakers large, but feel I'm loosing a bit of the bass intended for those channels. This probably has more to do with how my room is set (affecting possible speaker placement options and listening positions etc) than lacking ability of the speakers themself. The DD-18 makes all of those troubles go away.
What I need is probably a receiver that allows different crossovers for each speaker, combined with advanced room correction capabilities. Otherwise I have to turn the DD-18 down some 8 dB's
As much as I like Arcam products I'm now also considering Denon for my new setup. Still, not even the technically advanced Denon AVR-4306 offers individual adjustment of .1 and routed bass. And It's likely not as musical as the AVR350.