Best bookshelf speakers


Hi all,

I'm looking to buy a pair of good bookshelf speakers and since a lot of you here seems to know about speakers much more then me, I figured I'd ask for advice.

Here are the parameters I'm working with / looking for:

- The room is about 1200 cu/ft
- Looking for great performance at low volume
- Rich timbre
- Rich, warm bass
- Natural highs (not metallic-sounding)
- Low frequency range in around 40Hz (preferably 30Hz, but I know, there are hardly any in this range at my price point)
- $500 - $700, new or used

So far I am considering the following options (in no particular order):

- KEF Q350
- Dali Zensor 3
- Canton Chrono 503.2
Wharfedale Diamond 225

So my questions are:

1) From my list of 4, which would be your choice?
2) What other bookshelf speaker would you add to the list that fir my parameters?

Any thoughts are appreciated
rado001
A MTM design is likely your best chance at getting big sound from a bookshelf on a modest budget. 
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You might want to take a look at the Martin Logan Motion 35XT Bookshelf Speaker.
I think the Wharfdales have a wonderful sound, better to me than Elac Uní 5 in a side by side comparison. But really, If you have any way of auditioning any of your options in person, do it, even if it means spending a day driving and listening. Or go with An online dealer with a 30-day return period. Speakers are so personal that your preference is what matters. 
I can vouch for the Elac Uni-Fi-Ub5. I tried them out last year and found them very pleasing in every sense, especially the price. I've moved on and will be lising them attractively. Highly recommended.