Wilson Alexia 20x15 Room

I've had several models from both brands, but I do feel that Vandersteen is a better speaker. I can't really tell you what to do because you may not have the same taste's as me, but I can give you 1 piece of advice that may help. The one thing about Vandersteen that most people don't get, even some of the people who own them, is how transparent they are. They let you hear more of what your electronics sound like than any other speaker I know of. With a Vandersteen based system, you can usually change what you don't like with electronics.

But you shouldn't take my word on something like this. You're talking about too much money to just guess. If you can, borrow some gear from people you know, or a dealer. It doesn't really matter if its something you would actually buy, or not. Just do it to confirm my comments on the transparency of your Model 5's. If you don't hear things the same way I do, then maybe new speakers would be a better choice.

I recently heard sasha 2 at a dealer and it definitely made me think about my speaker choice. But as you all said I need to test the new speakers with my setup in my rom. That is hard part as locally there are no dealers who allow in home audition.

I had this problem in the past as well. What I did was that I took all my stuff ( amp/source/cables/conditioner) with me to the person who sold the speakers. It was a very good combo so I bought them. And my house it also did very well. I hope this can help you, good luck.

If Michael Fremer can squeeze Wilsons in a small room, you probably can too.

Shakey

My room is 33x15 ft using Alexia driven by ARC Ref250. The bass can be too heavy sometimes but can be managed with tuning devices like stillpoints and more forward speaker placement.

It is not a matter whether you can use an Alexia or not. You certainly can but I think you will have a easier time tuning your system with Sasha II. The only difference between Alexia and Sasha II is the reduced bass performance and lower sound stage.