Downloaded lightroom4 on a trial basis and it seems quite an asy piece of software to use with quite sensitive controls.
V2 is the same shot produced using ViewNX
V3 & 4 both using LR4
V5 is the original of V1 - feel free to have a mod
The forums suggest LR4 has lots of bugs, and at around a £100 I'm not sure I will push the boat out yet
Have a good Wednesday...you're half way there already!