Spendors SP-100 R.....anybody heard them ?

While I can't comment on the merits of the various Spendors mentioned above, I can add from my own experience in moving from a pair of Logan Ascents to a pair of Verity Parsifal Ovations. In this case, it started 2 years worth of component changes, and other stuff to get the Verity's to where I "knew" they should be performing... do I regret the swap.. occasionally... there is still a touch of magic that only 'stats can bring to the table that is missing. However, tonally, and timbre wise, (also imaging) I have made major gains.
My point here, is that we often seek change, unaware of what the act of making the change may entail.
If you are "up for it" then move forward .. and don't look back.
If I read GAREBEAR right, and knowing enough about the Avalons, I suspect the change he seeks might be better served by swapping out some components upstream. This will provide you with change, and yet not toss the baby out with the bath water. The Avalons are beautifully expressive of what they are connected to, and perhaps the change in something upstream will give you new reasons to still love the Avalon.
I think that, upon reflection, if I had persued this option FIRST, I'd still have my Ascents.

It depends upon the rest of your system, your room and your listening preferences, but if it were me, I'd go with the Spendors. They won't image/soundstage like the Avalons, but they'll play louder, go deeper and vocals will sound more natural. You should also consider the bigger Harbeths. The larger the room, the more I would tilt towards the Spendors.

...my mistake, the rest of the system is Rowland - model 112 amp , synergy IIi pre-amp, DCS on the front end. Cabeling is Shunyata Orion speaker and Anatares interconnects ...with Pursit 20th anniversary contego power cords....

garebear....the spendors are great speakers, but i suspect you are going through an 'i'm bored' phase, which we all do. no amount of money spent cures this for long. i do think your speakers are among the finest available, and the rowland gear is more than up to driving them in spectacular fashion. you could go with a nice push pull tube amp for a bit of variety(keep the rowland), and spend less than on the Spendors. I go between mac and revox and back all the time just to mix things up.