I love the holy roman empire, only thing I don't like with it is the location, almost exactly as I had with Poland, I can get attacked from the south, north, east and west.. Pretty much dead if I get more than 1 faction on me, and since it's so big and surrounded I'll probably be at war all the time.
And yes, England sure was great, played ALL night yesterday, about 70 turns and I had conquered a fourth of the whole world, denmark, britain, bit of france, portugal, castille&leon, some of Aragon, whole of Moors and a bit of egypt.
But now I'm installing Kingdoms, so I'll lose the save

So now it's either HRE or France, maybe denmark as it's in a good location like England.