sub s for Dynaudio Contour 1.3SEs?

I need to get a sub (or stereo subs) for my Dynaudio Contour 1.3SEs. I love these monitors, but need a more complete picture of the lowest octave. Subs seem like the way to go, as it will be a while before I can afford truly full-range monitors (and the 1.3SEs get me awfully close, outside of the lowest octave).

Anyone have a pair of 1.3SEs with a sub/subs? Or general subwoofer recommendations?

Thanks,
Carl