you can absolutely print nylon with it.
Nylon doesn't print at that high a nozzle temp - maybe 230-250. And you NEED a heated print volume for nylon, most machines do not have that.

And for that money you will have issues with any printer you get.

There are hundreds of machines out there.

The only one that is about 99% idiot proof (nothing is ever 100% idiot proof) is the cel robox: https://www.amazon.co.uk/ROBOX-RBX1-...ords=cel-robox
price has dropped a lot since i last looked. Good looking used one on ebay.
http://www.ebay.co.uk/sch/?_nkw=cel%20robox

Only prints 100mm height, but is as close to plug and play as you can currently get.

Pretty much everything else in that price range will be a lot more hassle than the qidi.
Whoever said it won't print nylon is talking out of their arse :-)

Printing nylon is seriously difficult at the best of times. But you pretty much cannot do it on an unenclosed machine. believe me I've tried with 4 different types of nylon.
In the end I just gave up, not worth the hassle of building an enclosure :-)
Both those machines have heated enclosed build volumes. So will both potentially print nylon. Just don't expect it to be really easy.