Basic Budget Bookshelf speakers


I bought a Yamaha WXA-50 amplifier for a spare bedroom.  I've got some cheap Polk Audio speakers hooked up now which sound meh. I've got some older Klipsche reference bookshelf speakers in my garage system I could swap with them but I think I'd rather get an inexpensive pair of bookshelf's and ditch the Polks.
I'm looking at the KEF Q150's and 350's as well as some low end Martin Logans. Is there anything else I should be considering?
jimfoto
Canton makes nice speakers and they have some in a similar price range of those you mentioned at  Accessories4less
The Silverline Minuet Supreme Plus is $699/pr and look and sound great, and they don’t require a lot of power so your Yammy should work fine with them.  Best of luck. 
How about Wharfedale. Model of stand mount dependent on room size, budget. They are relatively easy to drive, can be found within a budget between $200 - $500 (Music Direct a good source), attractive at their price point, and a good match for your amplifier.