In my experience, my girls have always been really sweet too, but the boys have always been super mean. When we raised them some years ago, my rooster attacked me every day when I came home from work. I was actually kind of relieved when a fox took him away. The girls are wonderful tho and can be very friendly if hand raised.
I have 2 RIR's that are now 6 years and they have always been nice. They were raised by a game hen, not me, so they are not very easy to catch, but they follow me around and when I do catch them they are very nice. And I still get eggs from them!
My rhode island reds are very nice except for one hen. The two that are nice will let you hold them, but the meaner one will chase you. But we have made alot of improvment with the mean one. I have heard that the rooster can be mean to. They are very good layers. Good luck with you rhode island reds.