Well, the SR-225i seems to have more forward mids than the SR-325is, but I'm not 100% sure on this yet. That doesn't make sense. I wouldn't call the SR-225i's treble tame, but maybe compared to a few of the other Grados. The mids might be more bothersome for some than the treble, but hard to say.
Strangely enough the treble on the Q701 doesn't bother me, but on the K702 it does. Not sure why or how this is possible. I sold the K702 several times due to the treble. I never was able to live with it.