Still an IHG platinum for 2013 but will be my last year after holding the status for as long as I remember. I am also Diamond at HH.
I stay about 60 business nights and 10-15 personal in chain hotels but the PC/IHG offers very little now compared to HH where I always get upgraded, free wi-fi, a free drink and double dip Avios and HH points. At IHG I seldem even get acknowledged.
So for me its Hilton, Carlson , Marriott and as a last resort IHG. Shame really but I guess they are content with the business they are getting or they would up the game.