I agree with Hagar and Poseidon.
I chose not to get FS9 since, the same as Fozzer, I had spent a long time customising 2002 to what I am happy with. Most of the areas that I routinely fly in have been upgraded scenery-wise (even with payware addons), so that when I do any low-level stuff, the detail is all I could want it to be.
To explore a new area, then what I do is look for scenery addons first. There is also some fantastic freeware stuff out there; people are very creative and talented. I've just recently found some terrific Caribbean scenery for 2002 which is great fun to fly around. I've never had any issues with addons - I'd recommend that you follow the installation instructions to the letter.
I tend to fly airliners mostly, and at FL370, ground detail (when you can see it) is minimal anyway!
My processor speed (PIV, 2gHz) was cutting edge when I got it a year ago, but it's looking dated now, but that's how it's going to have to stay for the foreseeable future. My average frame rate per second in 2002 on not-too-taxing planes, scenery and weather is around 16 to 20, which is acceptable. I certainly wouldn't want it to drop for routine flying, and since MSFS is a frame hog anyway, that was another reason for not going with FS9. What's the point is fantastic weather generation effects if you are seeing them at 3fps?
