I have the radio style with hardwired receiver from XHC and I couldn't be happier. I just have the most basic unit and if i had my druthers, i would opt for a feedhold button and a mode change button to switch between manual and auto mode in linuxcnc. but other than that i have been extremely impressed with the performance, battery life, durability (these things feel like very high quality units and come with a high quality molded rubber protective case. feels very sturdy in your hand and not cheap like the USB models (which i also have one of). the wireless aspect is fantastic and the delay on the radio model is non-perceptible to me. i have 3 of them, one for my big mill, one for my little mill and one for my converted lathe. the lathe is the slowest and i did some hal magic to accommodate to avoid the pulse stack-up on the slower axis'. the big mill is the fastest and it runs fine at full speed with not transition from pulse to velocity mode. but wither way i have hal for both of them and can verify they work fantastic with probe basic.
www.aliexpress.com/store/group/Wireless-...otSpots_1338008129.0