We'd highly recommend the GF. We were fortunate enough to be able to spend our honeymoon there in '98 and absolutely loved it
.
In addition to the monorail, this resort has stellar CM service and views. We had a room with a lagoon view in Sago Cay. We could see the MK at all hours of the day, plus in the morning we could go to our balcony and hear the dog at the HM and the WDW RR in the distance. At night we could even watch the Electrical Water Pageant including watching the area where they park the floats used for the pageant.
We have heard positive feedback on WL as well and we have walked around the resort and it seems very nice, but if the cost is not an issue, IMHO I would recommend the GF.