Need speaker for a small space and close to wall

That's a difficult situation. Close proximity to a rear wall will affect response due to the boundary conditions. Good acoustic treatment may help quite a bit.

The problem is that most monitors are set up assuming a position well away from the rear walls. Mounting them closer will tend to bring up the bass levels, muddying the overall presentation. EQ can help here to some degree, though I know many are not fond of that prospect.

You may need to think about a custom build, one that takes into account your particular situation.

You have described the type of music you like . . . how loud do you like to play it?

Triad in-wall.

There are two reasonable speaker placements:

1. Well into the room. The greater of 4' and half the distance to the listener is a nice start which will limit how deep the SBIR null is and get it down below 70Hz where a sub-woofer might fill in.

2. Flush with it. This gets rid of SBIR problems, eliminates edge diffraction, nets 3-5dB of more excursion limited headroom for a given number and size of bass driver, and increases efficiency and sensitivity by the same amount for a given cabinet volume and low frequency extension.

Studios often use soffit mounted speakers for these reasons, although you need a speaker designed for the placement so you don't get a lower midrange (and bass) boost that makes singers sound like they have chest colds and instruments boomy.

In-walls get a bad reputation because most are crap built for convenience (the smallest possible hole to cut in the wall) and not performance, sort of like Bose(TM) cubes but those problems don't exist with good designs having proper enclosures (well braced and heavy - you can have a 20 pound in-wall monitor cabinet, although the cut-out will be 2'+ high x 14" wide).

I don't listen very loud except when I'm not in the the sweet spot, then I may crank it up but then I'm hardly worried about fidelity.