In defense of "good" RIRs. To begin with, I did not want RIR because I also heard they were mean. I hatched eggs from a show breeder and got 17 out of 24 to hatch. 9 were pullets and 8 were cockerels. They are about 22 weeks old now and the girls are showing signs of laying. I kept 2 of the cockerels and all reside in the same coop. These birds are very inquisitive and friendly. NOw I don't go around holding and petting my birds but they do get treats which they eat from my hand. I will let the RIRs and my bantam cochins free range together. It is the cochins that chase the reds. I have found the reds to be very quiet and at peace with each other. I strongly believe it is the strain of RIR that one gets that determines their attitude. Most hatchery birds are not true RIRs. They are produced to lay eggs with no other conciderations. I had 2 hatchery reds and they were not mean but they looked nothing like the ones I got from a breeder.
I did get buff orps because they were so highly recommended for being friendly. Other than the 2 I hatched from Jodies eggs, the buffs I got from another breeder were a nightmare. A couple of ladies from BYC bought them and my nightmare is over. Sorry girls, I do hope they lay good for you.
Again, I think it is the breeding strain of any bird that determines it's attitude.