I tried different options on my GL1, including the Hannabach strings 1/8 cause they were
mentioned here and also on youtube. Well, I wasn't happy at all with them,
base strings sounded mushy...mids and highs too soft, really dull in my opinion.
Also, they are made for 44-48 scale, the GL1 has 43. Tension wasn't good.
Finally I went with those strings: (MOD EDIT - search for) "Jugendgitarre: Mensur 39-44 cm" from Dr Junger Saiten
Those are strings for children guitars, scale 39-44. The tension is still not perfect but
they sound much better than the Hannabach, the difference is quite staggering.
Mids and highs much more lively, base less loud and mushy, more fresh and metallic sounding.
All wound strings except the high e.