Selecting Rear Surrounds for 5.1 system

I’m not of the opinion that you need to go nuts for rear surrounds (unless you’re serious about multichannel music) as they only reproduce ambient sounds.  I think decent wireless monitors are really all you need, and you don’t have to go through the hassle of running wires.  I’d think something like these would be fine…

https://audioengine.com/shop/wirelessspeakers/a5-wireless/

Just one thought, and best of luck. 

I needed to ceiling mount my rears, so I bought a pair of PSB C500 speakers. I Bluetooth the rear channel to a Denon integrated amp that I already owned.

You could Bluetooth to amplified speakers like @soix mentioned. You'll need to run power to them. 

Thank you Soix ans sis883 for your suggestions.  I went over the Best Buy meantime and asked the Magnolia room person the same. He said its best to balance the room with B&W 704 or 705.  He was against using KEFs or Polks or Martin Logans in the back when 702s were in front. He said that they perform quite differently. They sell KEFs and MLs also.

Just for kicks, I asked if I could put B&W 803s in front and move the 702s to the back - he said that would be way overkill.

I'm a 2-channel guy.  My system is set up such that none of the HT gear is in the chain when listening to music. 

I don't have room for floor standers in the rear.  I do, but the location would be less than Ideal. 

Did you buy the B&W rears?  You could try an inexpensive option and see if you like it.   B&W floor standers seem expensive for rears.  IDK.  I'm not a home theatre expert.  Tonally matching the center channel and mains makes sense.  I'm not so sure about the rears.  There isn't much dialog going on in the rears.

I have two REL subs in front and a larger SVS in the rear.  The SVS only runs when doing HT.