LS50 vs R11/7/5 Meta

@kraftwerkturbo : You're asking the right questions.  It's playing plenty loud enough without fatigue.  Analyzing my thoughts a bit, I think there is something missing with small bookshelfs in my room; and I think it's the midrange fullness that is suffering.  Though, given what I'm asking from the LS50s it's a stelar performer - I'm just being overly critical.  When thinking about an upgrade the LS50 are wonderful at fine detail, but what I think i'm missing is the broad brush strokes 'in the middle' if that makes any sense at all.  So, keeping with the meta line, I'm thinking that the R (or even LS60s) might fill in some of the middle parts that the LS50s just can't do because of physical limitations.  

@avanti1960 :  I'm partial to the LS50s because it was the first speaker that really excelled in my room and met my expectations.  I continue to be wow'ed every time I listen to them.  So, maybe what I'm really looking for is *more* LS50.  

I recently purchased a pair of used LS50 Metas at $900 including shipping. As stated previously, they are now on sale everywhere for $999 with free shipping. I have a small room and listen at moderate levels most of the time. I purchased the LS50 Metas because of all the reviews and several reviewers made them part of their 'keepers'. I'm no expert, but have found myself trying to decide whether to keep them or not. I have a pair of Harbeth Compact C7ES-3 XD speakers. I didn't intend on keeping both speakers, but I really like both of them. I have purchased a KEF KS62 sub to add a little bass, but have not received it, yet.

15x45x9'!!! Even if the actual area is closer to 25' that's still a lot of air to pressurize. The problem I always had with subs is they didn't fill in the lowest octave of the male voice. The ls60 or if your intent is to stay passive the R7 or Ref3 would be the minimum. I've found Kef uniq speakers really respond to power. 

I would hope the R7/ls60/ref3 would do a better job filling the mid and upper bass br4 handing off to sub/s. 

Regarding the MoFi, or even Tannoy, these speakers do address the bass limitations, but the mids won't sound the same, better, worse, or sideways our OP chose the ls50 specifically for what they do well. I haven't heard the MoFi, but can say with confidence Tannoy concentric with a tweeter in the VC of a 10-12 or 15" woofer sound nothing like a Kef ls50. 

@steve59 :  Yep, a huge area.  My listening area only occupies about a 15x10 space, but the entire are is open.  I've often through about putting some sort of decorative / accordion style separation or a curtain, but these options have been vetoed by the aesthetics committee.  Plus, I don't even know if it will make any difference.  

@avanti1960 :  I'd be tough to audition - i can't find them anywhere, plus It's hard to drop $3k+ w/o hearing them.  Also, after the vinyl debacle i'm hard pressed to give them any consideration.