Rick and Bill (Rocky) hail from Bill Mayer I that created the (now) Russell Daylong seat w/ springs. After Russell bought the rights, both boys started making them w/o springs. Rick uses extra foam and cutting w/ lots of stitching. Rocky uses 5 molds of varying density and very few stitches.
I bought a BMS (fewer stitches) but Rick is very popular w/ LD riders also (Russell is tops). The ride- in is best because Rick seems to have poor communication w/ some buyers and leads them to complain (until they get the seat).