Oh Oh Oh, me! :)
Very Very very good lines.
First there are a lot of different lines Liros makes,
for bridles stuff like DSL, PPSL, TSL are very good, strong, strong outer sheath, easy to knot and the knots don't shift because the sheath is rough and solid and very strong, very unlike like the flimsy stuff say climax bridle lines are sheathed in.
For flying lines, the DC type is extremely good,
fingertrap style spliceable, very littlle stretch, thinner then lines from other manufacturers in the same breaking strength class.
Compared to a climax profiline the liros DC feels like flying on steel cables, or one could say one can feel how much stretch the profiline really has after that.
On the negative side, they are not super smooth 100 wraps and fell nothing lines. They are better suited for power kiting, quad line traction foils, then team flying. That doesn't means you can't use them, but its their weak point.
PDf from Liros with the tech specs of their flightsport lines:http://www.liros.com/dokumente_uploadfile.aspx?dok=19
Note that the effective breaking strength is some times much higher then the rated breaking strength. for example the DC60 is listed as 60dan, but has an effective strength of 84dan.
Here is a thread from the german kite forum which shows different lines next to each other in closeup:http://www.drachenforum.net/forum/Leine ... 29714.html