Grok is willing to have difficult and "extreme"(read authentic) conversations about religious and philosophical matters, while Gemini changes its messages halfway through streaming into "I'm sorry BHN, I can't help with that".
@Cake Wallet is currently the only one I use. It's now supplanted the rest, as a layman not running my own BTC/Lightning node (for reasons currently out of my control).
That wasn't the case until updates this year.