I think your big questions here are view and short walk to MK choice vs. dining choices. BLT will give you a fireworks show every night and a short walk to MK, but limited dining options in my opinion whereas the GF will not give you the fireworks view or short walk to MK, but you will have some excellent dining choices. Everyone does want to have a stay at GF as it is Disney's flagship resort and I've heard that the guest experience there is second to none on property. Personally I haven't stayed in either resort, but I have stayed in a Tower Room at the CR and I can tell you that the staff at the CR is probably a very close second to that at the GF.
I'm more inclined to say BLT for the view, but I think you might be a tad bit happier at the GF.