The MS-1 have a down side. While they are acceptable for classical for an older person; a Grandpa for example; they can be rather addictive and if he should learn of MS2i he may be looking for something even better next Christmas!
I guess I qualify to comment, being a Grandpa with grandkids old enough to have kids of their own!
I like to switch between MS2i and HD600 for classical depending on whether I want to hear close in or further out, but I do wear the MS-1 now and again as well.
I don't know if I have any upper frequency hearing loss as yet, but I do know that I like what I'm hearing from Alessandro and HD600. I'm not to the point of turning up the speakers yet...shucks; I keep telling the kids to turn their music down!
As far as comfort; I find the MS-1 and MS2i to be acceptably comfortable for longer listening sessions, but for a more "Traditional Grandpa" type, a set of HD580, if they can be located could also work out quite well if classical is indeed the most listened to form of music.