Its all Land Rover - love it or loath it!
Don't underestimate the current Defender. It is a formidable tool in the right hands. In the wrong hands its just an embarrassment...
As I see it, this is really about what we regard as the archetypal Land Rover. That is such an individual perception, that there is no simple answer. Using this forum to vote is very likely to result in an overwhelming lean towards the older stuff and that's entirely understandable.
As an ex-Rover Group, BMW, Premier Automotive Group and JLR employee, I regard it as simple. In October 2008, JLR were hours from going to the wall. The solution was change or die. They changed - moving the brands up market using the premium price, premium product mentality. That saved JLR. It's not the same company I worked for and since that period, the mentality has changed totally. I came in on the end of the greats like Roger Crathorne and all those individuals who had pretty much grown up with the company. You don't get appreciated for long service in one organisation anymore. You therefore don't get a sense of honour and responsibility which we all had. The world has changed. Its not to my liking, but thankfully I'm not working in that rat race any more and can largely pick and chose who I work for these days. End result is cars designed for style over function and that doesn't work for me.
Were I pushed to make a call on the OP's question, I'd say that the L319 chassis (Discovery 3 / Discovery 4) was one of the best platforms we ever had. I've been all over the world in Discovery 3s and 4s and never cease to be amazed as to their functionality, off-road ability, carrying ability, towing ability and durability. That to me ticks many of the boxes that formed the basis of the original Land Rover.