If you end up with Red singles you have my undying attention 
 and some of my  money.  LOL failing that I can sure work with big silver babies.
I'd rather stick with singles, our weather isn't that cold and moving rose back out of the line isn't something I've done.  
I'm going to dodge the hatchery dorkings, too.  Big and GRAND are good things to add to the batch I have here.
Luck over the winter, gawd you're getting lousy weather.
Cher
Mrs. AK-Bird-Brain :
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I don't know that there's much difference between the reds and the silver greys, not that I've seen anyway.  Don't know about the other colors.  Just depends on the breeding, I guess. 
WWD, my silver greys are single combed... big grand things they are, too. 
  My Red Lucas is a rose comb.  I must say, with the cold weather we've been getting, I prefer the rose combs.  If I don't hatch any red chicks this year (and yes, I'm a-gonna try!) I will try breeding Lucas with my SGDs to see if I can start my own line from that.  Right now I only have the one red rooster, but I have 3 SGD pullets and 2 SGD roos.  I was on the waiting list for 25 from Ideal, but I cancelled... I'm going to start small and work my way up from there.  I think I have about 18 eggs set right now. 
I don't know why Dorkings aren't more prolific than they are... they are beautiful gentle birds...