Agreed with the sibling posts. Ubuntu isn't a great experience - it feels seamless until it breaks, and then it's just a world of pain.
Debian/Mint/etc. are all good distros, but if you're willing to step up the learning curve just a bit, I'd definitely suggest Gentoo. I've been using it as my daily driver for several years now and it's made me feel like I'm actually in control of my machine (compiling all your code with debug flags so you can attach gdb when it's behaving weird so you can write a patch?! And then submit it to get sucked into upstream!? Yes please!). There's definitely a little work up front, but it's without a doubt the best experience I've had with Linux and I'd recommend it if you're up for it.
Debian/Mint/etc. are all good distros, but if you're willing to step up the learning curve just a bit, I'd definitely suggest Gentoo. I've been using it as my daily driver for several years now and it's made me feel like I'm actually in control of my machine (compiling all your code with debug flags so you can attach gdb when it's behaving weird so you can write a patch?! And then submit it to get sucked into upstream!? Yes please!). There's definitely a little work up front, but it's without a doubt the best experience I've had with Linux and I'd recommend it if you're up for it.