Best Main Halyard ?

[gramos]

I have been using a 32 plait Liros 10mm line for most apps on my cat , but now need to buy a new roll of line or just a new main halyard . I tried once , a dyneema 10mm and it only lasted 3 months before the sleeving parted company with the core where the clutch bites . very dissapointing after hearing all the hype about dyneema , £100 wasted , in my view . what is the best line to use ?