Is a 400 XCW a good bike to learn on? I have heard that one should learn on something like a 250 4 stroke because of its size. I have also heard that they can really suffer at altitude. I live at 8,000 feet and will sometimes ride at 10-11,000. This is what got me onto the 400 XCW. Smooth power, plenty of torque, and rides smaller than a 450. But at 20-25 lbs heavier, Am I asking for trouble? My dilemma: Wife doesn't approve of me buying new toys every couple of years. So I need to buy a bike that I can learn on yet enjoy for years to come. Me: 6'3", 190 lbs, 42 yo fit with lots of mountain bike experience; but with no real trail experience on a motorcycle. So what do you think?