The DSP3100's seem a little thin, the image is descent but thin. Have you compared the SW1600 with other subs? I think the midrange and vocals may be better on the F80, you loose imaging, but still very close.

How much in US currency are you selling the SW1600 for and will it work in the US with 110 Volt?

The DSP 3100's are probably better, but the fact that anyone could the contest is this close is amazing.
If Meridian wanted to make the end all be all they would make a version F80 with a separate matching speaker. With the economy where it is I am sure there is no such plans.