Bookshelf speaker pairing with subwoofer

My Magnepan LRS+ had a smaller footprint than my KEF LS50 + stands. The KEF is a bit more detailed and the LRS+ is a huge soundstage with depth. The LRS+ also have very little side wall interaction. You just need about 3 feet from the front wall. You also need some power from the amps.

I can also recommend the Studio Electric M4s, an excellent monitor-size standmount.

Depends on your preferences and budget.  I have a pair Revel M126Be standmounts that sound excellent with my pair of SVS SB1000 Pro subs.  They have a rear vent that can be plugged but I removed the plug.  I preferred them over KEF R3 Meta, B&W 705 S3 and SVS standmounts.  

Another option is the Vandersteen VLR-CT.

In my 12x24 room with 8' ceiling and no acoustical treatment yet, I am getting very good results with PS Audio Aspen FR5's on stands paired with an ELAC 3010 Sub...don't usually need the sub for most music I listen to (acoustic, Jam, jazz)...for reggae I turned up the sub to maybe 50%, but otherwise, very sweet and rewarding sound. PS Audio offers a trade-in up to $875 on the speakers making them $2600, plus if you want the stands another $500. They offer generous 30 day in home audition too.