tubular1 My pleasure!
holmz does make a good point about bass
If you want more bass then you need a sub or to move north of the Treos.
My 2CEs have a lower bass extension than the Treos, but the Treo bass is BETTER. Tighter, cleaner, more accurate. Quality vs quantity, though the bass from the 2CE isn't bad at all. It can sometimes be a bit bloated or "squishy" but I listen to a lot of acoustic music and not much of that is bass-heavy.
At "my" dealer, one of the guys has Treo CTs with 2 subwoofers and loves it, saying it's as least as good as the Quatro CT, (but not much less expensive to go that route if at all, esp with Vandy subs). The beauty of that combo is you can do it in stages: get the Treos, and if you miss the extra bass then add one or two subs. You may decide you don't need it.
The Quatro CT is in another league from several standpoints: 1) Each speaker has its own built-in powered subwoofer, with very adjustable output settings. Tuneable to the room and setup. 2) You won't need as much "horsepower" in your amp to drive the speakers, because the woofers are internally powered. So, you can drive them with a lower-powered amp.You will need the Vandy high-pass filter crossovers ("The M5 High-Pass Crossovers are ideally suited to the Quatro line of speakers as well as the SUB Three and are implemented between the preamp and the amplifier. ") BUT—I was just told that Ayre can modify both their integrated amps and their amps to have the high-pass crossover internally, meaning the external high-pass won't be necessary. I am told that other mfrs do this too, but not sure who.
The Vandy Forum is a good place to browse for info and ask questions
Vandersteen FORUM
Cheers