No, you're right Naemanson, it's purely personal opinion.

I felt that 'Stranger in a Strange land' was a little childish. I've not read 'Time Enough for Love' or 'Citadel' I'll look out for them. It's just that the one's I mentioned seem exceptional to me.
Morty, you're also right in that Heinlein and Sharpe are consistently good. I think though, that even Sharpe himself knows that Wilt is a masterpiece, he has tried a couple of sequels.