Better is a judgement and you are the judge.
Lambswool comes from fleece grown by lambs. Wool may come from any age animal.
Alpaca wool is supposed to be warmer than the sheep's wool.
cashmere wool
Neither generate heat. Neither is warmer
merino
Cashmere is made from the downy undercoat of goats and merino wool comes from the fleece of sheep. Merino wool is the highest quality wool and is very soft to the touch. Cashmere is softer and much more expensive.
Yak wool is naturally resistant to odor. Baby yak wool is becoming the new cashmere, given its ultra-fine , soft feel. Unlike cashmere, it resists pilling, and is 10-15% warmer than merino wool--often touted as the highest-quality benchmark for wool.
Virgin merino wool is an unprocessed wool and is obtained from merino sheep or lambs. Regular merino wool is processed from the withers only of merino sheep. While not as soft as virgin merino wool, the regular merino wool is still of excellent quality.
It depends. There is coarse wool that comes from the outer part of the animal's coat and also really soft and fine wool that comes from the inner area. The best stuff is as fine as high quality cashmere at 15-18 micron diameter hairs - and the worst stuff is, well, pretty bad. I've read (from Khunu.com) that yak wool is 15% warmer than merino wool and it doesn't pill as badly as cashmere. Haven't seen one of their sweaters yet, but it looks pretty nice.
Cashmere wool comes from Cashmere sheep in Kashmir.
As far as I know cashmere is most popular and most expensive wool in market I believe the world's most expensive wool is Vicuña, a South American relative of the llama and the alpaca. A yard of this high-priced wool ranges from $1,800-3,000. And if we have to compare it with what we consider pricey, then a yard of merino wool is tagged at $50 and cashmere for $100.
Merino wool is the wool from the Merino breed of sheep. It is prized for its texture and commands a premium price from manufacturers who use wool.
merino wool
Merino wool came originally from Spain.
Merino wool comes from the Merino sheep. Merino sheep are most commonly found in the United States and Australia and are prized for their high quality wool.
Cashmere goat wool
Merino are a breed of sheep, prized for their high quality wool.