I remember Minidragon well enough, I levelled with him and his relic G.Horn mule enough on my first stint on bissy plenty of times. If nothing else I'd go as far as to say he was probably the most driven player on the server at the time and he seemed like a nice enough person whenever I spoke to him. I was always impressed by the achievements of NIN as well.
Does it make him 'the best' though? The best at what is the real question.
I've come to the conclusion you can't truely nominate any individual for 'best' player on any server unless you set the criteria of what constitutes 'the best' first of all.
My idea of the best doesn't necessarily mean it's the same as yours. Minidragon had a ton of great gear and levelled like a lunatic, and if that's the criteria for who the best person on a specific server is then FFXIAH rankings tell you who the best on every server is so there is no arguement.
Any, back to sea cucumbers?