Hmm maybe... is it less glitchy than the 810? Any reason for sale? (PS my FTHR ~150.... )
It was great for summer riding but the touchscreen didn't work as well with the massively thick gloves I need to wear during winter. I bought a Wahoo Bolt so everything would just be done by pawing at the buttons.
You're welcome to borrow it and give it a bit of a test / try the screen with different gloves etc.