The alpha was great mostly. I just didn't like having just it for around the house, walks, just out running at the park, etc. Just wasn't practical for that imo.
My only other issue was twice on hunts, and I can't remember exactly what happened since it has been a year, somehow the sync or saved dog data on the handheld got deleted and then the correction wouldn't work until I got the dog back to me and re synced everything. Was probably me screwing up the touchscreen without realizing it but either way, it sucked.