Well, I'm going to have to throw my 2 cents in for Alpines of course!
My girls are pretty darn sweet and lovable -- they do battle amongst themselves, but the worst offenders were the Lamanchas I owned! They were earless devils!
My girls MILK. If you want to get into making any kind of cheese, it's sooo much nicer when one milking gives you the gallon you need for the recipe

I have one doe that has tested at 16 to 16.9 lbs for the last 5 months in a row, with butterfat from 4.97 to 3.5%.
They come in all different colors! <g> I like the surprise of not knowing what I'm going to get in each litter.
The unwanted boys gain fast and sell great for meat kids OR there is a great market for them for pack wethers.
My meat buyers won't take Lamanchas -- in fact, I had about 5 wethers I ran to the sale at 10-11 weeks old. The Alpines brought over $80 each, the one Lamancha cross brought $40
I grew up with Nubians and I'm not doing that one again <g> I can't take the noise, lol.
Now, if Sable Saanens ever get more popular, I might have to have me one of those!
Tracy