REL vs JL AUDIO

Get dual carbon specials and thank me later. You won't regret it; they sound INSANE. Or at the least dual 812's from REL. Much like my iphone, everything good is made in China (along with plenty of not-so-good-stuff). JLs are good as well and reach deeper, but not to my liking. No bad choices here...flip a coin...and hope it lands on the REL..lol

From past experience, it’s not about how big the subwoofers need to to be. I completely understand the larger the sub, the mor air it moves. There is a trade off and it is a negative one. The base is not going to be detailed. It’s about matching the speakers you are using for your 2 channel rig. It needs to have the speed and accuracy as well. It’s easy to forget this. It’s like an elephant trying to keep up with the cheetah, lol. Big is great for movies because most soundtracks are muddy, slow and sloppy. Big subs benefit from that. Music in. A two channel rig doesn’t. I learned that from IASCA Competition in Car Audio decades ago. I applied that in today system and loving the output. Remember make sure the subwoofers complement you system, not drown it. Makes all the world of a difference. 

I've owned JLA, Rel, M&K Martin Logan and others. I've heard SVS, Rhythmik, others. The best combination IME which I currently own are JLA Fathoms with an outboard Jensen high to low output converter. 

Also, any sub can be difficult to integrate if you don't know how, and without measuring to aid with dialing in, it's nearly impossible to get seamless integration. Then of course, final tuning with your ears. 

Both a very nice.  I have had no problem integrating my JL Audio f112 in my 2 channel rig.  No negative resonance issue(s) or anything else that I can report.
Simply great low end!

Just a thanks to everyone for all their input. I am at this crossroad right now deciding on Rel or JL.for my Monitor Audio pl300ii's.  Prior to the 300's, I was using Klipsch Forte's with an SVS sb1000. Now, the SVS just doesn't cut it musically with the 300's. Hence, I'm leaning toward Rel but have heard good things about JL subs as well. So thanks for the read folks, cheers.