Most 4wd enthusiast have a very difficult choice which model is the best for them! Many 4wd manufacturer will promote that their product is the best in the market so that they can sell.
As for me the best 4wd is the best that suit you.The most important, I think is, affordable to you, easy to find the spare-parts, economic and easy to maintain. How you want you 4wd to works on you, is it for daily use or just for off road vehicles.
One of my friend, he build his 4wd from the scrap and he satisfied what he did on the machine. There come the satisfaction and then later it suit for him. Most Malaysian (in my opinion) prefer to have 4wd that cheaper, easy maintenance and sometimes easy to build. From the opinion of professional mechanic (Sifu Alex) who's been a 4wd mechanic for more than 20 years, for him the best 4wd is easy to build. There are so many opinion and thought which 4wd is the best. Just for opinion not for debate!