Looking for proper subwoofer for EDM Wubzzz. Must have balanced output/input

I have been DJing since I was 16, I am now 27. I love listening to EDM music. I love the loud bass it produces. Bass music primarily. House music, dubstep, riddim sometimes. I also love rap, rock, orchestras music.

I have KRK Rokit 5s. Looking for something to pair it up with. Focusrite Scarlet solo the newest version I think so it has balanced output. Thing is, I used to have and SVS subwoofer the 10 inch one but it didnt have balanced outputs, so im looking for one specifically with balanced outputs to match with my scarlet solo and my KRKs.

Main Questions:
1. Should I just get the KRK subwoofer to match with the KRK studio monitors, or is it worth finding another sub to get more punch out of the bass? is there a better bang for my buck?
2. What subwoofer do you personally have that you love? Do you listen to EDM music? Looking for something dope, I just found this site.
3. Thats really it. I have a scarlet solo into my computer that used to go into my subwoofer then into my studio monitors, but now i need a balanced subwoofer.

Hope this was ok to post. I see a lot of ppl building their own speakers and im not there yet, but would be down to learn, I like building computers. Thank you
 
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