I bought this keyboard for use in a home for the elderly. Most have little computer experience, and the large font plus bright keys make hunt-and-peck typing far easier. One feature I noticed about this keyboard is that it helped me detect a possibly faulty USB hub.
Back-lit keys are easy to see at any light level (or, easily turn them off when not needed) and the large font helps people with vision problems; Comfortable to type on
None, unless you include the regular, non-sale price; $91.36 is a bit steep for a keyboard with lights underneath the keys; On the other hand, $24.99 is a steal