My own personal favourite breed is the Brown Swiss.
I prefer large cows which considering my upbringing with the short, stocky Friesians and Shorthorns is probably surprising.
I like their temperaments, good all round health aspects, their higher than average milk/butterfat content and the way they hold themselves.
I used to show cows years back and although mainly used the HF's every now and then found a BS for the part.
I've managed herds up to 320+ size and while they were mainly HF there have always been a few BS thrown in for good measure !
Hope this helps ?