Tamyra seemed good season one but it seems like there's a girl of her quality every season now so idk.
The only one that I can think of is Katherine McPhee. Tamyra was an amazing singer, it really can't be overstated. Fantasia was v good with what she did, but I'm not crazy about the raspy aspect of her voice.
I didn't see last season so I can't really comment on Lambert or anyone from that season.
Meh, I thought Kelly was by far the best that season. I might be underrating Tamyra though since I don't remember her that well. It's also harder to judge early season contestants since they were singing with like a crappy karaoke boombox in the background instead of the live band of the later seasons.
i never really watched any of the prior seasons except for catching a few episodes here and there but i think they purposely put bad people through just to fill a niche or to ensure that the few really good ones get through.