We have tamwoths, berkshires, lops and mangalitzas.
Tamwoths are by far the most adventuous. they can jump stock netting, however a couple of strands of electric puts them off. they are great fun to have around with lots of personality.
Mangalitzas are very vocal, docile and very active, they seem to spend less time sleeping than the other pigs.
lops are also friendly and docile, i think its down to the HUGE ears
Berkshires I think are my favorite, but dont tell the others!!!!!! again very friendly,
all our sows are friendlier than most dogs. all pigs thrive on attention.
I dont think it really matters what breed you get, if you spend enough time with your pigs you will reap the rewards.