QTR-Quadtone RIP

I'm running an Epson 2200 with the Epson inkset and printing on Gold  
Fibre Silk.  The paper profile I've been using is QTR-Gray Photo  
Paper "gray-photo.icc"  (and for matte papers, QTR-Gray Matte Paper  
"gray-matte.icc").  For the toning curves, I'm using those for  
Ilford's Smooth Pearl Cool and Warm.  It does a very good job, good  
enough for me to sell B&W prints for my part time business.  I'm not  
quite up to make custom curves and profiles which might do better.   
I'll be interested to see what other people here have to say.