What I dislike about Jasper is how it deals with modality: you have to say 'Jasper', wait for it to recognize that and confirm to you it's gone into 'listen' mode, then say the actual command. This delay is what made it not acceptable from a ux perspectice. I prefer to have all my commands prefixed with the keyword (I use 'computer' but from what I read online, 'jarvis' is a more popular choice...)

Jasper also writes audio to disk, then runs command line tools on those files. I haven't tested if this is a significant source of latency.