trin,
Simangus (SimmentalXAngus) and Balancer (GelbviehXAngus) offer several advantages:
-Larger selection of breeding stock to choose from than Salers & Braunvieh in most parts of the country
-Due to larger breed numbers, EPDs are likely much more predictable than from smaller breeds like Salers and Braunvieh
-Balancers/Gelbvieh and Simangus/Simmental offer excellent female fertility
-Dispositions in general for both of these breeds is good, and superior to many Salers
-Won't get the funky colors that you could get from Braunvieh
-Acceptable calving ease, good growth, and good combination of carcass yield and quality grade with Balancers and Simangus
-Calves will likely have more depth and "rib" than most Salers, making the calves more appealing to calf buyers