Any additional opinions? I'm not sure I want to get into FB paper, but how do RC papers handle toning?
I'm sure there are plenty more opinions to go around but what is your goal? At the end, the one that needs to satisfy is you, or your clients - not everybody on the forum.
Ilford MGIV FB and RC does not tone very well. The color won't shift that much and when it does, it wasn't very pleasant (to me). FB WT (Warm Tone) papers do tone well, and I like them but they are kind of costly. I have not tried RC WT.
Kodak no longer makes paper and hasn't done so for years.... One of the surprising gem is Adorama's house brand paper. I was told it was made in EU countries but not by Ilford. I have some here. They actually tone well. Because of the price point, I use these a lot to play around and experiment.
My standard is Ilford MGIV RC glossy, pearl, FB glossy and matte. (I hand color) If I intend to tone deeply and especially in sepia or brown, I use Warm Tone (WT).
I don't particularly like the RC glossy but I use them for quick prints and contact sheets.
I use RC pearl surface quite a bit. It's surface quality is similar to FB glossy. It's hard to tell them apart behind glass.
If I am making something special, I use FB glossy - which dries like RC pearl in terms of texture.
I also use FB matte because I hand color - but I guess this is more of a special purpose type thing.