Best sub for Dynaudio 1.3SE's


I was curious to see what people were using for a sub for their Dynaudio speakers. I am looking at HSU, both for two channel and for home theater... though the 1.3SE really does not need a sub for 2 channel.
rkerv
I did get a REL Stadium III with my Dynaudio Countour 1.4S. Integrated very easily and really opens up the speakers. The speakers seem to sound great across the whole spectrum.I got upgrades to my McCormack 225/RLD-1 and noticed the integration with the sub seemed to improve not just bass extension but soundstage.