Rell or JL subwoofer?

If money is no object the $4-5k JL  subs have room correction-built in , the lower priced ones I have owned Svs easilly ether especially the 2 I mention below .

I personally like the SVS SB 4000 and SB Ultra 16 subs over most Rel subs 

which are not sealed ,Sealed BTW are more accurate the Rel  are vented  passive radiator  through the bottom 

and for the record SVS has a great app you can do all kinds of adjustments via phone or tablet ,45 day trial ,and they even pay shipping ,and 5 year transferrable warranty the others Donot .

I have SVS, Rel, HSU, and Klipsch subs in my 4 systems and the one that is the most versatile and easiest to integrate is the HSU. The HSU subs that I use in my main system are a pair of the VTF-3 MK5 which you can get for $1,959.00 for the pair. 

@vonhelmholtz  Excellent, and very tough, question to answer. 
 

@alucard19 Which SVS sub did you have?  The newer ones have integration software that gets excellent feedback from users. 

I don't think you can go wrong with REL; currently using an S/510 and planning to add a couple of Tx series (plus they're on sale this month!)

@soix I had the older SB3000 sub, which was replaced by my pair of HSU VTF-3 MK5 subs.

I was also looking at some new  RSL Speedwoofer 10S MKII for my new spare room setup.