I am the guy who bought the Treo CT's in PA. They are replacing my non-CT Treo's. To be honest, even the non-CT version plays pretty darn close to the CT.
I also own the VLR's for my office system. I really can't understand why these little guys don't get more respect. Yes, I doubted their abilities, at first, but despite their small size, they bested a pair of Zu Omen Bookshelves by more than a mile.
Adding a sub will enhance either speaker. The new Vandy Sub 3 offers built in equalization which makes it one of the best subs out there.
As others have mentioned, even the 2wq subs are good replacements-especially if finances are an issue. They are built like tanks- even 30 year old 2w's are still working as they should.
And, do not feel you will not be welcome at the Vandy Forum. In fact, many of those responding here are members.
HTH
Bob