I am wondering which dairy sheep breed, or cross, has the best fibre. I'm planning on purchasing my first sheep next year and am still trying to figure out which way to go.
There is no overall "best" fiber. It depends on what you want to use it for. Most dairy breeds, however, have really poor wool because they are bred for one thing only: milk. Usually no regard to fiber quality is used in the selection process.
So what do you want the fiber for? Fine wool can be used for next-to-skin garments and long wool is usually used for carpets or other non-next-to-skin garments. Medium wool is primarily used as "stuffing" for quilts, blankets, pillows, stuffed animals, etc because it's not really good for much. Hand spinners prefer long wool because it's easier to spin, but commercial processors prefer fine wool (and will pay for it) because it can be used for wool socks, wool yarns, etc and they can command a pretty penny for it.
what about Icelandics? They're a tri-purpose breed. I have some rovings and they're pretty nice. I've also felt it raw...nice.
What about Finnish? Are they a tri-purpose too?
I would meet and talk with local breeders. Since you'd probably want to buy your sheep from local people anyways...then you can see first-hand the quality of the milk production and fleeces from their sheep. Does anyone have the link for the sheep breed selctor?