Many guys talk to much about Durango without owning it.
I got a MBX5R, two 808, a JQ, and a Durango. All converted to brushless.
The Durango is by far the easiest and fastest car on high grip tracks, especially on astro. It might "not be big" internationaly, who cares. It's just about the driver anyway, biggest company has the best drivers and that's it. Hobao could be world champion too.
This said the eco is hard to beat for a simple reason: its quality. It's on par with Xray but Durango is not as qualitative. It's very well made but a tad under Mugen. The other thing: most guys are still running the eco on tracks so you will have a massive support. IMO it's a better solution to have one single lipo too (DEX uses two). Unless you already have 2S lipos because you run an other class, it's just more convenient. So once again, the eco is the best choice.
So all in all I would pick the Mugen BUT the Durango -especially the converted DNX408- is one of the most underrated car there is. My girlfriend is running the buggy and had a 808 before and she improved massively with the Durango. I did my best laps with her car the first time I drove it on astro. The car is precise, very easy on the jumps. It's just too easy to drive. This said the weight repartition between the DEX and converted DNX isn't the same
