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I have the same thoughts.
Explore could navigate you to address/POI, and it has a bigger screen with touch.
However, 530 is smaller, it has a better battery life and the same maps IIRC. Also, it could recalculate route on the fly using their own heatmaps, and it has tonnes and tonnes features which probably I won't use but hey maybe I will, and not all of them require a power meter. It's black also.
Looking to get a Garmin Edge Explore. Is there any reasons why it should be avoided? Had thought about a 530 but the additional stuff looks like stuff I’ll never be planning to use. Don’t care about power meter connecting, training or on device strava segments or any of that. I’m after guidance and mapping and also on the fly routing and obviously tracking. Touchscreen makes me a bit apprehensive but it doesn’t look to be a problem in most circumstances. The lower battery life is also a worry but states 12 hours (as a max) still which will be ok a majority of the time and my current ancient 605 that I’m using has basically no battery retention so is plugged into my battery pack the whole time on any ride I use it on.