Looking for a G
Hello Steve,
By any chance were you the Pinz that took a group of G around SP a few years back?
Out of the choices you have given I would recommend/suggest the G 300. While on paper the 400 will tick all the boxes, it is difficult to get both parts and servicing here in the UK, mainly because the diesel 400 V8 is not supported by MBUK.
For simplicity I would think a nice 460 or if you can find one the 461, though the 463's are excellent off roadsers. If you wanted more power - then maybe consider an engine swap with a 606,606A - though I would research this VERY carefully as only a handful of people can do this properly.
If you have considered the 400 - I would point out the fact that the 500 is possibly one of the best all round G's especially in a 2000, 2001 guise - though I would be expected to say that! :)
The SWB models are better at the off road stuff if that is all you want to do in your G, but the LWB are more practical.
HTH
Spider1V