Considering Harbeth C 7ES-3

I really enjoy whenever I hear the Harbeth 7s and personally, given they have rich bass for their size, I find they do both the "organic Harbeth" sound but are also "fun" for any type of music. Great speaker. Frankly I don’t know lots of speakers in the $4,000 range (as I did a major speaker search recently at higher prices), but if you like the Harbeth sound, no other speaker really sounds like them (except maybe Spendor).   And if you really like Harbeth, you may find they sound more "right" than speakers costing much more money.

If someone likes the Harbeths, I doubt they'd really like the Spendor floor standers.  They don't have that lush organic sound of the Harbeths.

The Super HL5plus is DEFINITELY not lacking in treble, either measurably or sonically.  It sounds open and airy.   The C7 didn't sound lacking to me either.
The 30.1 was a tad darker sounding than the two above, but still very nice.