So I need to stay away from amps that are picky and will highlight lesser recordings to the point of making them very hard to listen to. In short, I need a high quality yet forgiving amplifier.IOW an amp that does not editorialize when presented with a less than stellar recording! What you need is an amp that does not make much in the way of higher ordered harmonic distortion and keeps lower orders down as well. The only way I know to do this is to go with a tube amp that is fully differential and balanced from input to output and no feedback. In that way lower orders (2nd and 4th) are cancelled (leaving the 3rd, which is treated by the ear the same as the 2nd, which is to say its nearly inaudible) and the higher orders will be masked by what lower orders remain. To this end a triod amp would be a good place to start, but you need one with some power- 30-60 watts.
If you're on a budget, the suggestion of the Dyna ST-70 was a good one.