Gosh, don't get me started on Polish! 
We have enjoyed our polish and that is the breed we are going to focus on for our breeding projects and showing. We have 4 bantum (1 year old), 1 standard (2.5 years old), and 10 chicks (half large fowl, half bantum.) The flock hangs out together and there have been no problems with that as far as the laying hens picking at the crests of the polish.
The polish hens lay like clockwork for me. Generally if they aren't laying, it's a sign of worms or some other thing I need to treat them for. They were even pretty good laying over winter, with no extra light in the coop. The egg isn't large, but more of a medium size, white and oblong.
I haven't noticed them to be picky eaters. I switched the feed to a 22% protein (chick feed) in the last month on the recommendation of a breeder. The higher protien should be good for their feathers, help them be in good condition for showing.
Yeah, my polish are noisy. But I love it! They are chatterers and at least in my flock, it's the blue and white that talk the most. They're not loud, but they do talk. I enjoy talking to/with them though, so this isn't a negative for me.
I find our birds to be gentle. They are skittish when first approached or picked up some times, if you startle them. But once they know it's mom, they settle down and enjoy a cuddle or rub. They do tend to be the first ones to respond to my voice and come runnning. But I really work on getting them to come to my voice - we've had some that would wander off when free ranging and calling for them as we searched was helpful. One would always keep walking, just *sure* that she was on the right track. We've had to go pretty far to find her before. Usually if I'm calling her and she hears me, she'll start calling for me too - then I can track her down. Her sister would realize she was lost and just sit down wherever she was (in the middle of the neighbor's field once, like a huge white golf ball in a field of green!) waiting on me to come find her, LOL!
Health-wise, they've been just about the same as the rest of my flock. Because one of the bantums was really small, and I didn't realize they had lice, we lost her. But the others were treated and have bounced back just fine. We've also wormed them with no problem.
I don't think they have any more problem with confinement than others. We have a nice coop and run, but we also let them free range most days. I do worry more about them free ranging since predators can sneak up on them more easily due to their restricted vision from the crests. We've lost one large fowl to a predator (racoon, or such), 2 chicks to neighbor dogs, and 2 bantums that it looked like a cat got. They are in the coop/run most of winter and do fine.
All in all, I would recommend this breed, but I'm a little partial to them as my favorties already 
This is the batch of chicks for this spring on their first day outside being watched by Phyllis Diller, one of last year's chicks.
