The MartinLogan XT60 has gotten very favorable reviews in the audio press, including Editor's Choice Award in the Absolute Sound. I have been considering replacing my ML Vistas with the XT60. The Vistas, to my ears, are lacking in the lower mid range. Full orchestra sounds to thin and bright. I have read that the XT60 sounds more full in the lower mid range. I will have to give them a listen before I decide.