I have tried other AI callers like call fluent (latency too slow) retell (too hard to integrate) bland (call gets cut off halfway) agentsys (expensive and call gets cut off halfway) vapi (doesn't fully follow my script)
So far voicegenie is the best. It sounds the most natural. And overall it follows my script very well. Support is also good.
Only 2 downsides.
1. I cannot trigger a call through zapier yet (developers said they would fix this)
2. It can only do outbound calls, not inbound.