This is my first thread and would like to hear from forum members who has experience with these 2 subs. I have a 2005 M3 running OEM HU, Focal k2p UV front stage, Focal Utopia 180w rear stage and a JL 10w7. The reason that I use the Utopia for the rears is that I like the fitment of the tweeters that fit my rear panels and don't like selling thing at all. I run the whole system with an Audison LRx 5.1k. The whole system very good and it sounds as good as when I use an old Clarion HU so I just wanna try something new. I know that the Focal doesn't need much power at all compare to the JL and the JL is pretty loud for a single 10. A 27wx is only a 11" with less power and it might be too weak for my car and the 33kx is a 13" so it is a bit louder. What would you choose between the 2 subs? I like SQ but don't want something that I can barely hear the bass at all. You all probably gonna suggest from thing else but I have to pick between the two. Thanks in advance for you input.