Actually i liked the original. I dont think there is that much dynamic range in the image due to the overcast sky, so probably it wont benefit that much from exposure blending/tone mapping. But that does not mean you cant use it anyway for artistic reasons.

I dont know what software you are using for HDR, but if it is Photomatix then also try using the Tone compressor and the exosure blender.
Both offer more natural results without the colour casts associated with tone mapping. I think the colours that you see in tone mapped images can look very unrealistic and you need to play around with the saturation sliders (keep them low) before you get something more 'real'. They also tend to rob sharpness.

The tone compressor is great for keeping depth in the shadow areas while still achieving a higher dynamic range then one exposure does. I really like the tone compressor in Photomatix actually. The exposure blender is very good too. I think sharpening up a bit in PS afterwards is better than trying to compensate with the detail enhancements, as Adam says it just tends to add noise.

Hand blended exposures in PS are something that i have read about but so far have not had the patience (and probably skill) to attempt.  I found this quite interesting article the other day with examples of how this guy compares his hand blending technique with Photomatix. He swears by the hand blending technique even though he admits it takes a lot of patience. Check it out..

http://www.outdoorexposurephoto.com/photoblog/date/2009/02/

Regards.. Shaun