I've done the converted mountain bike thing. If I were headed to a flatbar again I'd get a hybrid, and leave the mountain bikes on the trails.
Those of you talking about sag - this is a cheapie, it's probably got a lot of preload so it's topped out most of the time and only deflects for big hits.
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Genesis 49:16-17
"Well, well!" said Holmes, impatiently. "A good cyclist does not need a high road. The moor is intersected with paths and the moon is at the full."