I am quite happy with my inexpensive setup.
The ANET A8 has been working well for me.
The cupboard/closet keeps everything quiet and uniformly toasty, and I can check out the print via the camera at any point.
Heh heh.
I currently am, but I just acquired a BLtouch clone, so I forsee an upgrade to Marlin (I think?) in my near future.
Edit: I have not seen that warning though. Interesting.