Well, your comments are helpful. I don't remember any significant 'break-in' when I purchased a new pair of V2s in the past.
I have to confess: I purchased a new pair of V3s. (online ordering from the UK is so easy and quick). I'm still in the early stages of listening, but I am once again struck by how detailed and nuanced the midband is. Timbral fidelity is also unparalleled in my experience. I think the original designers got that right in their research at the BBC. They have bass too! I treated my room since I last owned ls3/5a and the bass boom is no longer any kind of issue....I can place them pretty much anywhere. They are brighter than the V2s in an excellent and lively way. The changes to the bass response too, are very welcome. They can hold their own in my listening room. The bass is still modest but it is classy and convincing. Imaging is superb. I'm running them with a beefy ss amp and it seems like a good idea, with 83 dB sensitivity. But, the biggest surprise so far is that they can rock hard. They play all my music genres. That was not the case with the V2s, at least in my space. They have some of the dynamic tightness of the Linn Kan IIs I also possess. Rock music, Zeppelin, King Crimson not only work, they work well. I'm very pleased with the purchase, and thanks Martyn, for your previous comments and review, which led me here. Cheers.