I was never interested in adding subs to my 2-channel system. However, I decided to try some REL T5i’s to complement some stand mount speakers I was trying. I was really impressed with how they filled in the low end, improved the soundstage and integral easily. I recently moved and my room is a bit bigger so I decided to try a JL F110 v1, with the goal of likely getting another. I really just moved two weeks ago and just set up the JL and haven’t dialed it in at all. It obviously goes deeper than the T5i’s but other than that it is too hard to tell yet if I like it more. I’ll report back as I dial it in more. I’m still just dialing in the whole system so it might be a few weeks.