Noel aka bird guy introduced me to Orbx scenery. It is from an outfit in Australia and is pretty good. It is a bit on the pricey side however. It has to be good because most of the scenery work is from Holger and you know his work from Misty Fjord fame. I'm still in the learning stage but having fun with it.
I own quite a bit of it and its FANTASTIC. Yes, its a bit expensive, but without equal. Also the files are huge for downloads. 3-5Gb each. Also global vectors will also add accurate roads etc. I would say combined with the Pilots FTX global mesh, its just awesome.