(1) first and foremost, the ATC SCM 40’s and Monitor Audio Gold 300 5G are large floorstanders that will highly likely simply overwhelm the room ( and you ….) from your proposed quasi or full nearfield listening position.
As @ghdprentice has pointed out….stick with suitable bookshelf / standmounts with an added subwoofer.
(2) None of your wishlist speaker options are inexpensive. What I believe @ghdprentice has subtly inferred in his post includes a key second guidepost embodiment of the following: ergo:
- don’t fall for the common trap that Uber high-priced strata speakers with comparative budget strata upstream electronics will be that magic silver bullet to provide you with that “aha” or “Jesus” moment in your audio performance improvement and enjoyment satisfaction .
Rather, here’s the better philosophy that is clear.
- A comparably affordable speaker with decent / better amplification and source, makes a lot more sense than an expensive strata speaker paired with a comparatively budget strata performance / cheap amp and source.
choose wisely