Subwoofer with Thiel 2.4s?


Hi all, I'm in the process of building a new system and am considering adding a sub to my Thiel system. I'd love to get one of the Smart Subs, but they're just too damn expensive to fit into the budget. Any opinions on the other alternatives? Although I do use the system for TV and occasional movies, I'm really only interested in 2 channel.

I've read good things about the REL Strata III, but would like to hear other's opinions on the available < $1000 (used) options.
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The SS2s do sound amazingly well integrated with my old Thiel CS2.4SE and the Thiel CS3.7s.

I have heard the JL Audio and it just seemed a tad slower off pace than the SS2s in the same dealer showroom

The SS2s don't call attention to themselves and just make the 2.4 and 3.7s into much larger speakers.

I think one reviewer said not to look at it as an expensive subwoofer but making a Grade A speaker (band limited) into a Grade A speaker (with full bandwidth) :)
Thiel has a new Sub out for this year, which is a little smaller in size than the previous model. I am looking to get that for my SCS4's.
There was an SS1 on here that just sold for $900. I was a day late on getting it. Really kicking myself over that one, but I had to finish my taxes to know what the money situation was going to be. Damn.
Anyone aware of the "charge the room" theory of subs? Although it might seem like another example of "audio mysticism", it appears to be real. Listen to music that has seemingly no bass with and without a (well designed, like a REL) sub. Without it the mojo disappears. Mandolin stuff illustrates this point...some say the sub sort of "charges" the air. Without the sub you could be experiencing a "mojo filter".
I like Thiel's warranty 10YRS.
Most others 1-3 tops.
I had bought some used JL's(113'sX4)from different sellers they were two yr. old.
Got them from the US.had them for a 8 months,one died,the other had next to no vol left.
As there was no warranty it was going to cost me a 1000 for each sub to send to JL to fix.I sold them all as is.
I wonder how many other JL sub s have crapped out over the 2-3yr period.
I liked them better than my DD-15's.
Warranty is very important to have.
I'd rather pay a nice chunk of change for a sub with warranty(10yr),than buy a cheaper sub and it's gonna crap out anyway.Save for a great sub with alot of warranty and
save alot of grief later,2-3 yr warranty doesn't seem to be even close for the price a person pays for a sub.