Okay, since everyone is weighing in here let me just tell you my results so
we can put this thing to rest. Some of the next up voices will allow you to
download and use independently with Jaws, but the newest ones, the scansoft
voices do require that you have text aloud. So, i have downloaded Text
aloud and the voice I purchased, and it works wonderfully with Jaws, is very
responsive, does not crash and sounds wonderful. When that podcast was
created, the real speak voices were not yet available, now they are and they
work great. They are not slow like the neospeech, but they take up about
one-third of the space.
Yes, even though you can use them without text aloud, I wouldn't recommend it. I would only get them if you want to make audio books with them, not to use as the voices for your screen reader. Some of them even crash with K1000.