Hi Mate,
I've got both a MY10 and a MY13 D4. Both 3.0L SEs and both have a few extra options.
The HSE D4s have more fruit standard but there are plenty of spec'ed up SEs around. Second-hand I don't think there would be a huge difference between an HSE and SE, especially after a few years ... but I could be wrong.
I find the 8 speed is much smoother but the 6 speed is not rough by any measure either. Granted my MY13 has only done 2K, Vs the almost 90K on my MY10. I find the 8 speed 'punchier' off the mark too. Not sure why as their torque output is identical .... I'm guessing gearing. And again .... the MY10 is no slouch at all.
Beware though, LR have mucked around with the spec level for the SEs over the years, some additions - some subtractions, a couple of examples being Bi-Xenon headlights were standard on the MY10 SEs and are not on MY13. Electric seats are standard on the MY13 but not MY10. Not sure what other years are affected.
I hear the MY10 is probably the best introduction to the D4 range ... affordable, yet still fantastic .... oh, that's right ... I have one for sale .... ooops ....LOL!!! :-)
Happy hunting mate.
Cheers,
Kev.

