You have written the contradiction yourself. Bookshelf Speaker: Where's the bass?
IMO, get the best choice for mids, highs, imaging, and listen for a month without a subwoofer.
BUT, have a sub location in mind, and have a sub in your budget.
My B&O bookshelf speakers died. I have a Velodyne powered 12" sub I used with them.
Hopped about like a cricket, chose a pair of Bowers and Wilkins DM100i.
Love them. I thought, they don't really need the sub, listened for a while, very happy. Then, why not, tried the sub, added just a touch more bass extension, just a touch, but now I would miss it.
They sound so good I re-arranged my office for perfect stereo imaging triangle. Previously I used balance control to adjust for slightly off center position. Goodby file cabinet, new keyboard shelf, built new suspended shelf to hold pc, dvd, back up drive, so glad I did.
No matter what speakers you get, consider how ideal your listening position is.