Okay let me chime in here. I've owned a REL Storm which was sold and replaced with a REL Stentor III. Both were used in my room 21x15 which you can reference thru the link under my name. I subsequently sold the Stentor III after I bought a pair of JL audio F113's. The JL's do outperform the REL as stated above. The REL was/is more polite and softer on hard heavy notes, probabaly a hold over from the British mini monitor days where all of their speakers were "polite" sounding.
The REL is a great subwoofer and I'm glad you are happy with it in your room, and your system.The comparison I would make is that the JL plays lower and tighter and louder than the REL ever could. I'm not talking boomy bass either. These are the tightest cleanest subwoofers I have owned to date and I've owned at least four different brands of subs in my 30 years in audio. To make the comparison fair I only used one JL sub when I compared the REL Stentor III and the F113.
The REL is a great subwoofer and I'm glad you are happy with it in your room, and your system.The comparison I would make is that the JL plays lower and tighter and louder than the REL ever could. I'm not talking boomy bass either. These are the tightest cleanest subwoofers I have owned to date and I've owned at least four different brands of subs in my 30 years in audio. To make the comparison fair I only used one JL sub when I compared the REL Stentor III and the F113.