So I bought the $650 dual extruder from monoprice:
Printed a few things, then started having display issues (every other column on the display was bright/dark), and also when print jobs started, the display would start showing garbled text. Read a bunch of forums, even the $1200 flashforge printer (that this printer was copied directly from) sometimes suffers the same issue. There's 2 causes:
1. static shock (dry house) can zap the display
2. The EMI from the motors can trick the display into thinking it's receiving new data
Monoprice has a very good return policy, and they had no issue with giving me an RMA number and a shipping label to return a 46lb printer and ship me a new one 2 days after they received mine back.
New printer is working great. I always discharge myself on the outer case before inserting the SD card (I may buy either a wifi card or an SD extender. And before assembling it, I opened up the bottom and wrapped the data cables in foil tape so they are shielded from noise.
One thing EVERYONE with a printer should invest in is simplify3d software. It does a great job of break-away supports, creates Gcode very quickly, and is very easy to use (and I've had no issues of PLA not sticking to the bed). I'm running a part right now on the fastest speed, and it's sticking fine and the quality is still good.