I was looking at building a 6+ GPU rig, but the Z270 boards are so freaking expensive.  In some of those 6 gpu threads people have suggested building a 4 gpu on the cheap for faster return and this makes sense.

Is there something in the lga1151 family that is cheap and reliable that people here can suggest from experience?  I will be sourcing it from Amazon.

Thank you for your advice in advance!