There is no one best answer to this question. Machete designs vary according to the region they come from and the job they're intended for. My son & I own and experiment with many types in the field. I will spare you a detailed review, but I will throw out a few tips from our experience...
#1 Best Machete in my book: The Brazilian Tramontina. Don't be fooled, this machete will slice with the best. It excels at cutting vines, brush, and if swung at the proper angle it will slice through 2" thick trunks in one swing. It is lightweight, weight forward bolo style, and will not tire out your arm with extended use. Best of all, this machete is cheap. I love good gear, but I really love good gear that's cheap too. It makes it easy to afford several. I keep one in the truck, one in the UTV, and one in my survival pack. Those South Americans rely on these blades to get through their daily life and they know a few things about them. You will have to buy or build your own sheath.
If you're looking for something that will perform better in chopping mode, or for use with batoning firewood, then a thicker blade may serve you better - especially those with a full flat or high sabre grind. Yes, the ESEE Junglas does fall into this category. My favorite of this type is the Condor Knife & Tool Village Parang. Parang style machetes tend to be well designed by Asians that also rely on them daily. We have found CK&T products to be well made and well priced as well. They provide some awesome sheaths as well.
It is very true that the Cold Steel Kukri is absolutely indestructable, and it cuts okay for me, but I do prefer to carry those blades that I have found cut better. I should also mention that if you carry a CS Kukri, you might need to modify the grip for extended use comfort. Many blades will cut great once or twice, but it's the ones that will allow you to continue cutting for hours without trashing your hand and arm that really shine in my book.
That's my 2cents worth.
Morph
Monty