what sub to get

I have a rega brio amp and dali ikon speakers and I know a sub would really help. would a svs sub work with these speakers- or another sub? thanks for your help. looking for a small sub in the 500.00 range.
I like my gallo sub. Compact yet very articulate sound.
You can't go wrong with the SVS-1000. I have used that sub with Spendor and Harbeth with great results. I am not familiar with your speakers but I see no reason why it would not work with them.
Sunfire Junior which is not exactly junior powered with 500W bestie amp.
HSU. I like mine. Extension down to 25 Hz for not too much money, factory direct.