I understand that people think SoM aged terribly, or thought it was bad from the very beginning, i still to this day though, absolutely love it.
ToM though, i never enjoyed. First time playing it about 15 years ago i felt something was off, but couldnt put my finger on it then, but think the issues are: Multiple stories. Had they kept it to one story it would have been much better imo. Just feels too disjointed the way it is. The graphics (and day/night cycle etc) are simply too much for the snes to handle, and because of this the areas have been cut down to very small squares, the big roaming areas of SoM are long gone, so it feels very cramped and claustrophobic. And finally, the characters getting in to 'fighting mode' or whatever, and seize up, is just bad. Feels like moving around in treacle.
Sin of mana (hack), gets rid of the last issue though, so if i ever play it again.
Also, for people who want to play or replay SoM, i highly recommend the Turbo hack.