I picked up a pair of the HL-5s off A'gon about 6 weeks ago and couldn't be happier. I am running them with a Primaluna Dialogue 2 with SED Winged C EL34s; talk about rich/lush midrange. While they perform very well on the low end, I still like a tad more at the bottom, so I paired them up with my Martin Logan Grotto. After tweaking the settings, I have been able to successfully integrate the two (to my ears) and haven't looked back since. I feel like I have a system now that gives me non-fatiguing imaging along with the fullness of a floor standing speaker without breaking the bank.
