Dan,
My developer of choice was Moersch, as I started lith printing while living in France and it was the easiest, if not only, developer I could get my hands on at that time. However, just recently, I started using the LD20 that I picked up while in the States and I found that the colours with the Foma 132 and 131 papers were more sandy, as opposed to the true salmony colours I was getting with Moersch. Of course, the strength of the dilution and the ripeness of the developer had a lot to do with that, but overall that was what I was getting. Moersch is more pricey, but I find I could get a lot more prints through it than the Fotospeed developer (almost double). However, my experience with lith printing is still somewhat limited, so please take that into consideration.