Bookshelf speakers under $1000

Hi, I'm looking to get a pair of bookshelf speakers to be primarily used with a Pro-ject  Debut carbon DC record player connected to a Denon receiver that was passed down to me(15 years old but was high end at the time)

I'd like to keep this to a budget of under $1000 and am considering buying used as well.  I'm new to this so any recommendations would be much appreciated

So far recommendations have been:
Focal Aria 906 (offered at $850)
Bowers and Wilkins 606
Dynaudio Xeo4
B3485fe6 4fc6 49de 9d5d 1281a3bac894mlenow
NHT C3 with the current 30% off coupon. I find it pretty unlikely there is any other speaker out there at this price (talking new gear only) that is objectively as good. HomeTheaterHiFi has a review/measurements and Stereophile has a review/measurements of the older gen. It’s a state of the art design in terms of following pychoacoustoc theory (almost the polar opposite of the B&W, I wouldn’t even consider the 606).

Dynaudio is hit or miss (in terms of some models being excellent for the money and other being just ok). I have no experience/knowledge on that model in particular, so worth a demo.

The Focal is good.
Wharferdales, especially if you replace the tweeter caps. :)
Used Vandersteen VLR's. Though new are $1350 a pair. They are the best I can think of- and I tried a bunch.
Used B&W CM5. Used Dynaudio EX14. Are on my short list for a second system. What is power rating for your receiver?
The Focal does everything well IMO. 
For under $1200, if youhave a subwoofer the Monitor Audio 
Studio has top drivers from the Top platinum line and a Very good AMT tweeter. I bought them with the matching stand and filled them with dryer play sand and agraphite lead shot.snd sound st least as good as speakers double their cost. Upgraded the Xover and rewired them with a Clarity, the great Duelund Silver foil Bypass caps ,Plus Jupiter and VH Audio- Cu Bypass caps 
and VH Audio great Litz-OCC - Copper ThinTeflon Wire  ,made 
speaker cables with the larger version and easilly best several 
$2k plus very good brand name cables ,just time consuming to build but well worth it .judt to point out if you,or a friend is skilled 
you can save $1,000s in markup and exactly to your liking.
since drivers were excellent to start with the Monitor Studio now will easily compete with any $5k+speaker with ease.
Revel M106. Great little speaker
Ascend Sierra 2's are on sale right now for $1230 (usually $1448)

Hi mlenow,
I had the opportunity, last year, to compare multiple Dynaudio speakers. Xeo2, Xeo4, X14A, and Focus 110. 

The Xeo4 was very good but the hub squeezes the digital down to 16/44 before it sends it to the speakers. What's the use of Hi Rez then. The X14A was equally as good with option to change preamp and source. 
Ultimately the Focus 110 were much better all around.
It's tough, the money savings from having active speakers, Cables and Components, allows you to afford higher quality source. 
I finally settled on the Xeo2. The quality of sound is excellent. Including very nice bass response from a small 5" two way and digital optical input allows playing of Hi Rez. 

However, I would not generally recommend dynaudio with Denon. Depending on the model. Some Denon are breathtaking and some are meh. 
A more neutral speaker will reveal stuff you wish they didn't. I had a pair of the Boston Acoustics VS 260 recently. Absolutely amazing speakers. So open. So neutral. Unless the rest of your system is up to the task, you would swear they sound like crap. 

As for other bookshelf speakers. My recommendations would be ...

Epos Epic 2 are very good and a little more forgiving. 
Epos, in general, are an excellent value/quality. I would not recommend using any in the Creek M series (5, 5i, 12.2, etc) as they are VERY neutral.

Infinity 6Kappa would match up well and be very pleasing with the turntable. Woofer usually need refoamed and be very careful of any Infinity with the opaque dome midranges. $300 a pair to replace them. 

JBL L26 is another great turntable speaker. Woofer frequently need refoamed. If going with an older pair of speakers, I would recommend buying them with deteriorated foam Surrounds. You can get them for less, then pay to have them refoamed by a trustworthy party. To many folks slappin' on foam Surrounds and blowing voice coils down the road. 

If your looking for an active speaker. The Meridian M30 would match up well. Quality Interconnects and power cables for them and they are quite good. 

These are great sounding speakers that are fairly easy for your receiver to drive...

If you'd rather something new, these are also fantastic sounding speakers that still sound great with mid-fi electronics...

In addition to sounding good with a receiver, both of these will reward you greatly if you upgrade to better front end electronics down the road.  Best of luck.