Upgrade from Quad 11L?


My current setup:

Music Hall cd25.2
Music Hall a25.2
Quad 11L
Onkyo T-9 tuner
Audioquest Alpha-Snake interconnects
No-name 12-gauge speaker wire

The 11Ls just replaced Paradigm Mini Mk3s. A big improvement: I love the Quad's detail, clarity, and pace. So much that I'm contemplating an upgrade to Quad 12Ls (if I can find the old version) or Quad 12L Actives (which I know I can get; the MH a25.2 would serve as a preamp).

My sense is that the system as it stands is well-balanced, and I'm actually very satisfied with what I hear. So I'm trying to decide whether this is an itch I should scratch. My suspicion is that I should stand pat and think about long-range upgrades rather than tinker now, but input would be helpful. I listen to all kinds of music, but Wilco and Radiohead are playing most often. Thanks.
afranta
I completely agree with Guido, since I have the Quad 21L. I recently upgraded my preamp and you cannot believe what a difference it has made in my system. I believe that the more powerful an amp you give the Quads, the better they will sing - of course with better wires. You can check out the evolution in my system. Before you change the speakers make sure you have a good pair of speaker wires. Try the Signal Cable wires. I am patiently searching for a new power amp. This will happen sometimes in Feb-April 2010.
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Have the 11Ls and 12Ls.
Have always had tubes on the 11L. Added a class D amp and have been very pleased. Have always loved the musicality of the 11Ls but now they seem much faster as well.
12L are a bit punchier, but you can always add a sub.
I'm intrigued by the idea of adding a sub (there is a sub out on my MH a25.2). What would I need to consider?

Tubes are interesting, too, but maybe down the line ...

Thanks for the feedback!
Agree with Bob about working with the room, especially placement. Have to disagree about cables, at least until you have basic good quality throughout, and this does not need to coast an arm or a leg if you investigate my suggestions above.