Hello, I have to retire my faithful 910 XT and I do not know what Garmin to buy. I had thought about the 935. I will surely postpone this purchase until the end of 2020 and I do not know if the device will remain flat and operational since these devices become obsolete very soon. It is a great effort and expense for my economy and I would like the purchase to be lasting. Do you think it is a good option? The 945 is prohibitive for my pocket. Thank you.