If I can use both Philips Hue BLE and Zigbee to connect hue lightss, which would be better?

[ancient echo]

Are there any objective pros and cons to both, or is the choice entirely down to environment and/or preference?

[bright pumice]

Blietooth is much shorter range and prone to interference. Zigbee is the way to go for Hue, and it's what Hue uses in their hubs.