Hi, i'm new to this forum and was wondering if anyone owns the new stationary bike by Pro-Form? the Tour De France one? my question for anyone that owns it ...is... Do you ever feel like you're going to run out of difficulty? i would like to buy a new bike but i don't want one that i will outgrow quickly ... one that i can always up the difficulty on ........ one that will last a while and alway give me a challenging workout...... or if anyone can recommend one that they have owned that they have never outgrown .. that would be helpful too... thanks