Thanks winoguy! Very helpful. Big is a relative term of course. My Revels are about 40 inches tall vs the Signature SEs that are 8 inches taller. Two things for me. One is handling them - I'll need help to get them in the house and, unlikely but not impossible, if I had to get them back in the box, then more handling issues. They are 150 lb in the box. Maybe more important is the tweeters on the Revels are at ear height in my usual sitting position whereas I'll probably be looking up at the tweeters on the Signatures. But I can place them further back so that mitigates the issue somewhat. The tweeters on the Alecs would also be at about ear height. I agree that the Legacy finishing options are great though.
Thanks also to Dave and Troy. It's definitely down to the Signatures or the Alecs. Decisions decisions...