which one should i buy factors to consider are, size, price, bowl size, design, attractiveness value http://shop.grasscity.com/cgi-bin/grasscity/cccsp6.html http://shop.grasscity.com/cgi-bin/grasscity/cccsp9.html http://shop.grasscity.com/cgi-bin/grasscity/cccsp15.html http://shop.grasscity.com/cgi-bin/grasscity/cccsp36.html any help would be appreciated p.s. i really like the last one, but id like to kno if anyone has that one, and anything they can share