Had Three Different Speaker Thoughts; Now A Fourth


I currently have B&W 606 S2 bookshelves and I am thinking about doing something different, I haven't been overwhelmed by their build or performance. So I read and read and read some more and I think I have it narrowed down to three choices. Auditioning any of them is highly unlikely.

I've looked at the Tannoy Eaton, the Volti Razz and the Magnepan 1.7.

My listening room is 12x25 and there's not a lot of room for moving my LP (odd closet and a center of house chimney). 
I have a Parasound Halo6 Integragrated. 
Given the size of the room would the Razz be too much? This is my top choice.

The fourth option a friend mentioned and it has appeal is this... I also own a pair of Polk RTiA7 towers. They are a really nice cabinet with a nice build that house a 6.5 and two 7 inch drivers and a tweeter. He said I should think about replacing the drivers with Scan Speaks and upgrading the crossovers.

Thoughts?
dadork
soix makes a good point. Each of those speakers has its strong points. It depends on your priorities.
Fritz is a good recommendation.  All the drivers he uses are from Scanspeak.  Search this site for plenty of recommendations.
The Razz is a nice sounding dynamic speaker and will not be overkill for your room.  Your amplifier complements them perfectly.
They improve greatly over the current Klipsch Heritage sound because Volti has done an amazing job at controlling cabinet resonances.    

Replacing drivers and crossovers to an existing cabinet is not a trivial operation and will be more work than imagined, results are not guaranteed either- drivers are tuned to the cabinet specifically.  
Voicing crossovers is a science and an art and the heart of any speaker.  You need to know what you are doing to get the best sound.  

If you have the Razz in your sights I say go for them.  A better sounding speaker than any Klipsch heritage.  Dynamic, musical and exciting with plenty of detail.