I'm the user that Brian Walsh referred to with the Lenco/4PT/Coralstone. I'm very happy with this combination. The arms that I identified as being candidates for the Coralstone were the 4PT, Ikeda 407 (a favorite of Jean Nantais of Lenco reputation), the 12" SME V, Tri-planar, and the Phantom. I purchased the 4 PT from Brian and he set everything up. I also own a relatively early generation Reed 12" 2A (red cedar) that I pair with the Koetsu Azule on a Steve Dobbins-based Garrard 301. The effective mass of my particular Reed 2A is 30 grams per the factory spec sheet. The construction of my arm differs a bit from current production which lists EM at about 22 grams (the Reed factory confirmed for me the head shell design is different in the current generation). Reed will build a special version of the arm to mate better with a stone body Koetsu. So, at 30 grams EM, it would seem my Reed 12" 2A is quite compatible, too.