Unitron
CIC Completely-in-Canal
Full Shell
RIC Receiver in the Canal
Advantages
Disadvantages
Directionality
Large battery
Space for components
Small battery
Susceptible to wax
Volume control
Memory buttons
Memory buttons
Cosmetic appeal
Little space
Non-Directionality
Natural Directionality
Partial Wind shield
No Wind shield
Directionality
Volume control
Memory buttons
Wireless
Partial Wind shield
Cosmetic appeal
Possible conflict  
with glasses or
oxygen tubes
Slightly
greater
chance of
feedback
than full
shell
BTE Behind-the-ear/Open ear
Directionality
Volume control
Memory buttons
Partial Wind shield
Possible conflict  
with glasses or
oxygen tubes
Longest battery life
Fits most hearing loss
Low possibility of feedback
Best for longevity
Good longevity, less repairs
Best for Power-severe hearing loss
Canal
Good longevity, less repairs
No Wind shield
susceptible to (wax)
Possible occlusion
Remote
Susceptible to
fluid drainage
Susceptible to
fluid drainage
Susceptible to
fluid drainage