Hi,
We have two mini lop x cashmeres and they have the most stunning temperament. They are both girls and have been handled since they were born. Another rabbit I had who has left us now was a female mini lop x dwarf lop and she was stunning but she scratched and bite. Every rabbit is different, you'll just have to find somebody that has handled them since they were born. Also, when you buy the rabbit, stay with it before you make any final decisions to see the temperament.
There is a rumour that boys are more tame than girls but I have found this not to be true. If handled daily, girls and boys are the same. A downside with boys is that they can spray urine, so if you don't want this to happen, desexing will stop it.
I hope this helps !