I've got both. I use the Garmin 1000 as my "Heads Up Display" as I'm riding but, use the Garmin Forerunner 935 to upload all of my data to Garmin Connect because, the watch strings the entire day together.

FYI - Not everyone gets great results with wrist heart rate monitor (I do) so, I actually use a chest heart rate monitor and pair it with both the 1000 and 935.
FWIW - The Forerunner gets awesome battery life (over 24 hours with the GPS running and over two weeks without).