I guess you have to ask yourself what you are looking for I wanted a varied dual purpose flock of brown and colored layers and I wanted to avoid some of the breeds known for "stronger" personalities. I agree about the Speckled Sussex, they're beautiful birds and seem to be fairly intelligent for chickens. I really enjoy mine. I have a mix, of 25 hens & pullets all but two born in 2011.....Orpingtons (Blue & Buff), Barred Rocks, Speckled Sussex, EE's, Americauna (sp?), Welsummers and an Australorp & Wyandotte. The friendliest are probably the BO's and the BR's, only one of my EE's is friendly, the rest are sort of standoffish. In regards to laying...the BR's, BO, Australorp and Wyandotte are my most consistent layers, they take off about one day a week. The EE's lay about two or three days in a row, then take a day off, then again, same with the Blue Orps. The Sussex's lay probably four eggs a week, they're very light colored medium eggs so I can tell theirs pretty easily. The Welsummers aren't laying yet (at 32 weeks!), so they're an unknown, . They aren't particularly friendly, but not scaredy cats either, I bought them at 25 weeks, so I'm not sure how much they were handled. The 16 week olds that I raised myself are much more social and inquisitive. The 20 week old Americaunas I have are also not laying yet, they're shy and submissive.
Edit to add - This spring I'm getting more EE's & Wyandottes - I really want some Blue Laced Red & Silver Laced, and also Marans for the dark brown eggs.