Bought my T6 from Backcountry. Works great. No problems at all with heart rate monitor. The HRM is much faster at picking up beat changes than the Polar. Since they use different wireless transmission protocol, I tried them side by side at the same time. The T6 updated more frequently. It seemed as if the Polar was always trying to catch up.
The displays are easy to read and easy to navigate. Suunto really gives you a lot of flexibility in what you read in each mode. Big thumbs up for that! The only problem is the temp reading is not accurate when the watch is on my wrist. Well, that is where I want it, on my wrist so I wish they would fix this. It always reads about 88 degrees F indoors when the temp is closer to 72. It must be picking up too much body heat to be accurate.
I have only played a little with the software so far. It seems easy to use and the downloading is a cinch. Getting my workouts loaded onto the PC is very user friendly and straight forward.
Overall, a great piece of gear. Highly recommended!