I have GSC4, that I picked up a thrift shop, I had always wanted a smaller bodied guitar. This one I am quite fond of to the extend, I changed out the tuners ( gold with white perloid buttons) put a bone nut and saddle, a martin/fishman pickup up)... I think it is pretty sweet.
I also have a DR12-7 ( 12 string ) have done no "upgrades", but it is a nice guitar to pick up once in a while..
... further to this ... I will no doubt look at any Sigma that I come across just to see what I might find...
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Steve
the view from down at the crossroads.
a couple of guitars, a mandolin,bongo drums, some harps, a recorder, train whistle and a kazoo....