I’m also developing a PCB antenna version (868-915 MHz) of my node. My boards are ordered this week so I’ll put them to the test soon! I hope to get satisfying results 
The new version is based on my previous designed node and supports RFM9X + RN2483 modules. See here: https://eth0maz.wordpress.com/2016/08/21/the-new-lorawan-node-is-alive/