Have raised Whites at several times, gorgeous birds just like the Blacks. Ours were large and majestic birds just like the others. Had some a long time ago and they were absolutely excellent layers! My grandma had some and she had one hen she kept track of all year and the hen laid almost 250 eggs in one year. Amazing for such a big bird, gentle chickens but yes a little aloof from people.
Raised Black, Blue and White Langshan bantams in the last ten years. They were exceptional birds also. Great layers, very active and great fertility. We really did enjoy raising them. Gorgeous birds to boot. I have some pics but have to get them scanned to get on the computer some day.