Budget subwoofer recommendation for Klipsch RP-600M II?

Hey everyone,

I’m looking to upgrade my current setup: Kanto YU4 powered speakers and a Jamo S808 subwoofer. I recently picked up WiiM Amp and a pair of Klipsch RP-600M II speakers and want to pair them with a budget-friendly subwoofer to enhance the low-end.

I was thinking about getting Klipsch R-120SWi from Costco from $149, but based on a few reddit searches it might not be the best option.

A few folks in this subreddit recommended RSL Speedwoofer 10E ($299+tax), however I also found locally used JBL Sub 550P 10" for $150.

  1. Should I go with RSL or used JBL will do the job?
  2. Any other recommendations for a good subwoofer that can complement the Klipsch 600Ms without breaking the bank?

Thanks in advance!