I really like North Central Ark... the last couple of years I have taken my family on vacation to Batesville and have enjoyed it very much. As a kid I spent time in this area as well.. If I ever move.. my first two places to go would be Colorado and North Central Arkansas.
I would agree with another poster that Eureka Springs in the fall/winter is a good place to vacation. Cheaper hotel rates in the off season as well as a number of good restaurants is the main reason to go during this time. My wife and I went a couple years ago in November and thouroghly enjoyed our time.