I've got a Yavin Luke of my own, but I like his "stock" headsculpt and boots just fine, personally.
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I honestly think its the paint. With a re-paint, the farmboy Luke looks MUCH better. However, I really like the SS Stormtrooper head too, but don't like the expression. That is why I'm waiting to see the next Luke released by SS and what it looks like.
One of the versions of Luke I have always gravitated to was the him in his Ceremonial / Yavin attire. I guess I have always liked it because it conjures images in my mind of some untold adventures that may have taken place between episodes IV and V.