Currently using Ubuntu Gnome. i would like to switch to a new distro. which one should i choose?
Personally, i would like to switch to Manjaro, it looks good : P

Gentoo... lol

How comfortable are you with Linux?

If you think youre very confident I recommend arch (no not for memes sake) else I would test out a few random distros in a VM

Antergos, works great.

What you don't like about Ubuntu Gnome? Hard to give suggestions if we don't know what is the problem and requirements.

"looks good"?

Like many others said before, it all depends on how much effort you're willing to put in. I would also suggest going for Arch or Arch-based to go further into the rabbit hole, or why not take an step in a completely different direction with NixOS.

Side note: Like @Linux "asked", the "look" on Linux is not bound to any distribution. You are able to get (almost) any look on anything.

Try UbuntuMate

@fuck2code This. Solus is good.

Manjaro is nice. I'm having desktop glitches with KDE on two screens, but everything else is great.