I may get an iMac later this year. Had a 2008 one. Now a rMBP 13 inch. Wondering why I see very little posted here on the 21.5 inch screen. At least lately, I haven't gone back into 2015. Is it not sold in the quantity of the 27 inch or just just that most MacRumor members are buying the bigger screen? Just curious. I think the 27 inch will be too big for my needs and don't need the higher specs. Thanks for any thoughts-- Oh, not looking to pit one against the other. Just wondering on perceived lack of posts compared to the 27 inch.