I'm a bit lucky, in that I listened to / grew fond of CAMELOT when I was still awfully young, and too young to appreciate what made for a good musical versus an almost good one. And such, that score has a lot of affection in my mind.
And I have to agree that "Follow Me" is the true gem of the composition. It's the melody that most often just sneaks into my head.
But in terms of the match of song to lyric, "I Loved You Once in Silence" really is top-drawer Lerner & Loewe. Those chromatics lend so much regret to the longing, especially the third note on a phrase like "and now there's twice as much grief..."
Just really, really nice. Those boys could really write a song.