> Did you have any problems with comprehension?
No. But then, I listen to TTS all day, every day, 12 hours a day. I could have listened to that voice at least four times faster without losing anything.
> "top pick" of commercial options?
$1, also sometimes sold under the brand "voicetext", is by far my number one option. It's quick, sounds natural, and is easy to listen to.
Second would be the
$1 stuff. It's what Apple uses on IOS and mac. It's also quick and natural, though not quite as human sounding as neospeech.
Then I guess would be the
$1 TTS. It sounds pretty human. But for whatever reason, it just isn't enjoyable to listen to. It sounds too stiff, somehow. Like a bad human actor, poorly reading lines. The voice is good, but the intonation is just off somehow.
Lastly are all the other natural TTS commercial solutions. Your voice has all of these guys beat, for sure. But they are an option.
$1 has been around forever, and they're pretty darn cheap. But they're also state of the art for the year 1999.
$1 are good if you happen to need strange British accents (Irish, Scottish, and a bunch I've never heard of). Otherwise, don't bother.
$1 are pretty OK voices. They must have a pretty good IOS API, or be cheap, because a lot of developers insist on using them. They're fine for what they are.
$1 are overpriced and over marketed. I mean, they're OK. But they're not "the best voices for windows 10" like they claim over and over and over again on their website. And they're not worth the money when so many better options exist.
> compared to (m)any of the open source options I've tried.
Yes. Yours is better than all of the open source options. If you made that voice open source, I'd start using it tomorrow. If you wanted me to pay for it, though, I would be much less interested; I'd rather spend the money on neospeech or vocalizer. I'm sorry if that sounds blunt. I'm not trying to be offensive, just give you an honest idea of how I think you're doing.