SOmeone should pick up those OHMs ASAP assuming the offer is legit(Don't know the seller) if they can be had for under $3000. I would if a could use another pair (I already have three pair of OHMs).
I use the same speakers ( Walsh 5 series III) (with different cabinets, ie the vintage pyramidal refurbished ones, not the new ones like the ones on sale with the higher end wood and finish) as my reference. Set them up right in most any room that can accommodate them (not small or light) and you'll likely be set for a long, long time.
Not particularly tube amp friendly though, if that is an issue, but add a tube or two upstream in source and/or pre-amp and you are golden there.
I have never heard Harbeths, but from what I read, the OHMs are probably not far off in terms of tonality from Harbeth. VEry neutral, tending towards slightly warm in some cases, but never hot, cold or analytical.
My wife has never complained about the OHMs but has with many others, especially in her spaces. They are not small or light but have a very small footprint for the amount of sound delivered and with hoods are are very non-obtrusive. PLus they can go reasonable close to even untreated walls, especially for Omnis.
If speakers must go very close to the wall, wall treatments might enable but normally there are probably better choices out there in that price range.
