Nuance's Dragon Naturallyspeaking is about the most frustrating, ill-conceived, effectively-unsupported, crash-prone, erratic and generally flaky application of its kind on the market. It's unstable, unpredictable, and regularly drives every user I know into apoplexy. The problem is, they just don't care. Really, they don't: bugs are left unaddressed for years, often through several major "revisions", because they know that there's nowhere else for users to go. That's especially true if one needs their specialized vocabularies.
If anyone wants to know why monopolies are bad ... this is it.