I’m using Fedora since I found it fast to setup, fairly stable and it just works. It’s the community version of RHEL which hopefully means there will continue to be an incentive to support it.

I’ve always been a bit on the fence about Linux Mint since the incident where someone managed to publish a hacked distro on their site that installed a backdoor.

Other than that, I agree with what some others have mentioned; it’s mostly a matter of personal preference.