I try and use Speedflow stuff when I can, it's made locally (Australia) and has always been made to a high standard. I have used push-loc fittings quite a lot as well, it's a little less expensive and does the job well.I've also used Eaton and Aeroquip steel push-loc fittings as well. Over here, that stuff was only marginally cheaper than what I was paying for the Speedflow stuff.
My issue with a lot of the chinese made stuff is often it's just a direct copy of someone else's stuff. There is no effort in it, other than posting over a sample and asking for 10000 of them to be made. One speedshop in Aus went as far as copying their competitors part numbers, along with the fittings themselves.

As always with the chinese made stuff, it's hit and miss. I'm not made of money, but I'd rather save for a little longer and get something decent.