u/RepresentativeWeek32

Hey fellow refs,
My colleague and I are looking to upgrade our communication system. I’ve narrowed our choices down to two specific systems: the Spintso Refcom II and the Vokkero Unity.
I've already read all the spec sheets (Vokkero’s Sub-GHz/UHF & dedicated DSP chip vs. Spintso’s 2.4 GHz Bluetooth & software DSP), but I’m really looking for real-world experiences on the pitch.
If anyone has used either (or ideally both) of these systems, I'd love to know:

1. The Whistle Filter: How do they actually compare when your colleague blows the whistle right next to their mic? Does the Vokkero actually kill the peak instantly? Does the Spintso let a sharp "crack" through before the volume drops?
2. Connection Stability: Have you experienced any dropouts or micro-stutters with the Spintso during matches with larger crowds (due to 2.4 GHz interference from fans' Wi-Fi/phones)? Is the Vokkero really as rock-solid as they claim?
3. Audio Quality & Ear Fatigue: How do they sound during a fast-paced game? Does one system leave you feeling more acoustically exhausted or with a headache after 90+ minutes?
   Which system would you recommend and why?
   Thanks in advance for your insights!