Devore or Harbeths to replace my ESL63s?

I'm on the last stages of a speaker quest that has been quite difficult. For the last year I've had ESL 63s in a smallish room (14'8 x 11'10). I've got them to work extremely well for small scale ensembles, particularly jazz, and they also sound great with electronic music. But I can't give them enough space to image an orchestra, and they don't really rock (at least without Gradient sub-woofers, but that's another story...)

So after a long search, it's come down to either Harbeth or Devore for replacements. These have been my favourite contemporary speakers for years, so basically I've just spent a long time finding out what I already knew.

I previously owned Compact 7ES3 and enjoyed them, but found them unrefined in the soprano regio, and slightly muddy around the port output. The Monitor 30.1 is considerably smoother in the high frequencies and I find it a beautifully balanced speaker. It is the perfect size for my room, with one failing. It lacks the half octave of bass needed to give kick drums any force. I tried the new SHL5+ in my room but they are just too big for my room, sadly.

A friend of mine owns some Devore Nines. Very few people have Devores in the UK, but he has a fantastic system with VTL 2.5/150. It used to be that when I heard his system I would find the Compact 7s unlistenable for a couple of days. That changed with the ESL63s, but the Quads have an uneven combination of great strengths and severe limits in a small room.

So it's come down to either Harbeth M30.1, Devore Super 8, or Devore 88.

I have a second hand pair of the Super 8s at home at the moment. They are beautifully organic and draw you in to their world gradually. Other speakers I have at home have more immediate and crisp micro-detail (Harbeth P3ESR for example), but the Super 8s seem to put a root into the ground and claim the room as the proper place for their music making. Relax, they say, don't worry about the details, we will sort out your musical life.

I have only two reservations; first, they are quite lean in the mid-bass, especially in comparison to my friend's Nines, and this presents some limits with rock and electronic. Second, my system is optimised for Harbeths (and then for ESLs), and Devores would probably work better with lower powered, very refined valve amps. I don't get the same clarity that I get with Harbeths in my system.

I also have an option on some second hand 88s, but I have never heard them and I would have to buy blind. That is generally against my religion.

I guess the key question is; do I go with what I know (Monitor 30.1) or look to optimise my system gradually for the newcomers (Devore Super 8 or 88).

I'd be grateful for any thoughts from anyone who has compared the M30.1 with Devores in the same room, since that is what I can't do at the moment.

(My system details: the amps are Unison Research Unico Pre/DM. The sources are a Fletcher Omega Point 5/Audio Note Arm/Nagaoka MP500, Trichord Diablo/NCPSU). Audio Synthesis DAX Discrete with AS modded CD Transport.)