My input on a Heal-Tech product. I used their gear indicator readout with ATRE on my V-Strom 1000.
As it was a 6-speed, the gear indicator was very handy to ensure you are in the correct gear. The ATRE function forced the engine to use the 4th gear map for 5th and 6th gear, rather than their own maps. Reason being, the stock mapping reduced power by ~20% in the top two gears. With the ATRE installed higher speed ride ability was improved. Besides, if I have a 100HP bike, I want 100HP available.
The product did as it was supposed and was of high quality.