For me it is the DLH all the way. I have stayed at the PPH, and it is a nice place, but in my opinion does not compare to the renovated DLH. As for the GCH, it is nice, no question, however I have stayed in similar looking hotels before in our travels, and it just does not do it for me when comes to staying there while in Disney. I can stay at a hotel like the GCH in Banff, and I have, and wonderfull as it is, not Disney enough for me.
Other's have their own perferances, and that is okay. I just much, much prefer the updated DLH. The grounds are fantastic, the rooms are very well put together and a nice size. In addition to the touches in each of the tower's lobby. It is the one for me, and our family agrees.
Others will disagree but I find it more Disney, but again that is just my opinion, but really the place is fantastic.