I am looking for a new wire-free doorbell. What features do Honeywell Doorbells offer that differentiates them from other brands?

The series 3, 5 and 9 Honeywell Doorbell and Door Push Button range has a unique styling design.
Halo and/or strobe light features uses light and color to maximize communication for those hard of hearing as well as accentuating aesthetics. Available on all series 3, 5 and 9 doorbell series with the exception of RDWL311.
The mute and sleep timer feature offers the option to reduce disturbance from the doorbell. Available on all series 3, 5 and 9 doorbell series with the exception of RDWL311 and RDWL313.
The mp3 downloadable feature enables any mp3 melodies to be downloaded and used direct from computer via USB. This is available on series 9 (RDWL917) doorbells only.