Perhaps before talking about derailleurs, one should discuss cassettes.

You have a compact 50/34 front and wide range 11/32 rear.

That gives you a pretty tremendous range of gearing.

50/11 = 4.55 : 1 gearing.
34/32 = 1.06 : 1 gearing.

Are you actually using the entire range?

Would you be better off hitting your hills with say 34/25 (1.36 : 1), and perhaps standing as needed?

The advantages of a smaller cassette is the sprocket spacing.

For 11:25 (CS-6800)
11, 12, 13, 14, 15, 16, 17, 19, 21, 23, 25

For 11:32 (CS-6800)
11, 12, 13, 14, 16, 18, 20, 22, 25, 28, 32

You have some tight gearing in the high gears, but you start skipping a bunch quicker.

It means that if 15T or 17T are the perfect gear for the moment, then you don't have them.

On the other hand, by leaving off the 28/32T, the person with the smaller cassette may struggle more on some of the steeper hills.

A lot depends on your personal fitness, what you're used to, your weight, and whether you're carrying any cargo.

Once you choose the cassette, then pick the derailleur to go with it. Or, select the long cage derailleur in case you change your mind with cassettes.