I have, I like to fully concentrate on measuring many appointments where on my / n interlocutor / my interlocutor and reluctant transcripts do. Between these dates, I use the voice recorder to the results to hold and bring them later in writing.
The device is beneficial limited to that which is to make it: It does not require a guide that some buttons are intuitive to use and self-explanatory.
The battery life is enormous, the storage time tremendously and the sound quality very good. Did I once bought something right :-)