Yes, syn-gut. When I strung my first low tension, I only had syn-gut and co-poly lying around. I decided to start with the syn-gut because that's what I had the most of. After trying an all poly and poly/syn-gut hybrid, I like the all syn-gut the best.
Both of the other setups are nice, but I keep going back to the syn-gut. The only down side to it is that the strings move a lot. Not the case with the poly and hybrid.
Evil doers ... you face The Tick!