A sub to go with kef ls 50 speakers


Hi,I'm getting good results with my ls 50 monitors.Can you recommend a fabulous sub,to compliment this set up,please.
misternice
I'm partial to REL since they are fed the same signal the speakers see and thus integrate very well. I own a T9 which would be a good match and I believe I've seen them listed here for around $700.
I bought a used REL Q150e for 200 bucks a few years ago…it's still working perfectly and I can't imagine not having it…great sub.
Post removed 
SVS SB-1000 worked great with the Spendor 3/5r that I used to own. They offer free shipping with a 45 day in home trial.