Yeah speaker tuning is likely a major difference maker, and my experience with McIntosh gear is that it’s not very aggressive in the upper presence region either so the combo of the two makes your impressions very understandable.
Given your budget, I’ll just throw out there that LSA is selling their speakers at a discount here, and their flagship LSA-20 Statement speakers are right at your $4k budget. The reason I mention them is I think their sound profile and imaging strengths may well appeal to your tastes (you can read reviews), and they offer a 30-day, in-home trial if you’re up for it. They also come with a nice pair of 8ft speaker cables that I suppose you could sell to reduce the net cost of the speakers if you can’t use’em. Just a wacky thought FWIW.
Given your budget, I’ll just throw out there that LSA is selling their speakers at a discount here, and their flagship LSA-20 Statement speakers are right at your $4k budget. The reason I mention them is I think their sound profile and imaging strengths may well appeal to your tastes (you can read reviews), and they offer a 30-day, in-home trial if you’re up for it. They also come with a nice pair of 8ft speaker cables that I suppose you could sell to reduce the net cost of the speakers if you can’t use’em. Just a wacky thought FWIW.