All X-plane menus I've ever come across are single-screen. You shouldn't NEED a back button for anything you do...which menu bothers you?
I've always found X-plane's menus to be blindingly simple and easy to use. They allow for so much customization!
As for hearing that x-plane is better, it's a matter of opinion and what you look for in a flight simulator. If you want realistic graphics, better ATC, artificial traffic, and an interactive FMS, then FSX is the way to go because those are easier to achieve. However, if you want far more advanced physics, better customization (making your own aircraft, making your own airports and landscapes, etc), then X-plane is the product for you. Keep in mind that, with X-plane, you can still obtain very good ATC (through XSquawkBox), good artificial traffic (though you do have to make it yourself) and great scenery and graphics (as long as your machine is VERY, VERY powerful). If you have time (and some money) to invest in a flight simulator, x-plane will make you very happy. If you're looking to buy a game, look no further than FSX.
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