I'm not so fond of green lentils - sort of a wrong combination of size and texture. I like the red ones better - and Puy lentils have more 'bite'.
I bought this miso online (not a great selection in the health food stores here)
http://www.clearspring.co.uk/japanes...ic_hatcho_miso
It's not too salty or strong, and has a great, full, round taste.