I opted for YSS Z-302-TRL 310mm rear shocks with 17-25 N/mm progressive rate springs. I'm only around 155lbs..
I haven't fine tuned them as much as I want yet, but I've got total overall unloaded shock length set to 315mm, spring preload to 168mm unladen (springs are 180mm free length) and rebound damping at 30 clicks from full soft. So far, I love them. Gave a nice 1-1.25" drop.
