I use full beds of syn. gut in my own frames almost exclusively and I string at home. I group the few that I'm familiar with like this:
Too stiff for my taste:
Gosen OG Sheep Micro
Gamma WearGuard
Prince SG w/Duraflex
Moderately soft:
Volkl SG Classic
Babolat
Prince Original SG
Forten Tournament Nylon 16
Softer than moderate:
Kirschbaum SG (my personal favorite - a fresh bed is like butter)
Softest in the SG family:
Forten Sweet
I've used a couple of other SG's, but not recently enough that I can drop them into any group above (I don't remember how they felt or performed). Forten Sweet has been a little more squishy than Kirschbaum for me, but that's a good thing in terms of Forten Sweet working as a potential low-cost alternative to many expensive multifibers. Kirschbaum is super-comfortable for me, but feels slightly more connected and "right" for me compared with the Forten Sweet.
Although I don't care for Gosen OGSM in a full bed in my own racquets, even at lower tensions, I have found that the 16 ga. version works quite well as a cross string when locals ask me for basic poly hybrids. It's performance and durability are quite good in that role.