Rag Photographique is a really sharp matte paper and as mentioned earlier, it relatively neutral. I've had very good results with it. It's one of my standard papers.
I just picked up some Epson Hot Press Natural. I wanted a smooth paper that was a bit warmer than Rag Photographique for portrait prints. Looks promising so far.
I just measured the Lab values of both in case you're interested. . .
Canson Rag Photographique L* 97.3, a* 0.23, b* 1.04
Epson Hot Press Natural L* 96.5, a* 0.06, b* 2.61