3.0mm white square (I need to try the new 3.3mm orange & yellow square I found and bought), followed by 2.7mm white square, then 3.0mm round (for really gnarly & chitty stuff like I dealt with yeaterday, it is a very tough but dull line), 2.7mm Husqvarna Penta "Star" shaped (I may go get a spool of higher gauge of it!), 3.0mm blue Dolmar square-twisted followed by 2.7mm blue Dolmar square-twisted (extremely "sharp" line, great for fresh & juicy weeds).
I have yet to try the Dolmar orange square I have.
Most of the generic round lines I bought due to good pricing and they are just cannon fodder for chitty jobs.