Hi Laura,
We have Saanens and Boers. Our Boers are quite nice and do very well at shows.
Our Saanens are also milk/show goats.
We love a Boer/Saanen cross. A 50% cross from this will make weight and should look pretty good, but can in no way compete with a higher % Boer.
A doe from this cross bred back to Boer...now you're talking! 75%-88% Boer make ideal crosses (we generally prefer 88%

). Large frames to pack all of that meat onto. The loins on some of my Saanens are soooo long and wide....put that thickness of a Boer on it and it is amazing!
Your average Fullblood may not be real milky so sometimes these crosses grow faster than their Boer counterparts. We breed for udder, milk, and great bodies on our Boers, so it can be tough to beat those fullbloods, but the 4-H kids are real competitive either way.
For Example: 2005 Kootenai Fair GCH...75% Boer
2006 Kootenai Fair GCH...88% Boer
2006 Spokane Interstate Fair GCH....92% Boer
2006 Spokane Interstate Fair RGCH....Fullblood
2007 Kootenai Fair GCH...88% Boer
2007 Kootenai Fair RGCH..75% Boer
2007 Bonner County Fair GCH...Fullblood
2007 Spokane Interstate GCH ...88% Boer
These are just the goats bred at our Ranch and sold to the 4-Hers over the past 3 years.
BTW, a Boer X Saanen makes a very nice pack goat as well. We have people come here specifically to purchase those wethers for packing. The height and length of the Saanen, the extra bone and pigment of the Boer is apparently very attractive to them. I would imagine the same would be true of a cart wether. Pack goat people generally want a kid that has been bottle-fed.
Oh, and they want to know that they are CAE negative...pack goat is no good with swollen knees!
Camille