Most people don’t. Honestly, until a colleague pointed it out to me as an option for single-sided deafness I didn’t think of it either.
Yes I would probably avoid the highest technology since the StereoZoom is not an option, there has to be binaural hearing for the StereoZoom to work. The transmitter unit is only that, a transmitter.
The battery will drain with the CROS/Bi-CROS option within 48 hours for the transmitter. If you select an aid with a size 13 battery (traditional BTE or Full-shell ITE) as the receiver/hearing aid then you will get probably 3-4 days, maybe 5 out of the battery. If you select a RIC that matches the transmitter unit then you will still only get about 48 hours.
I believe the software does take into account some head-shadowing effects, however, you will be hearing everything in your good ear so it will all seem like it’s coming from that side, even if it is being transmitted from the poor ear slightly before the good ear hears it on it’s own.
The transmitter will continue to transmit a signal when the Hearing Aid is in a directional mode so you will be hearing input from both sides. I would not keep a hearing aid in directional mode all the time.