Welcome! Always nice to have new converts
Be sure to check out ALL desktop environments and not just Cinnamon and MATE. You'll never know what you might like. (I settled on KDE after Gnome2 went extinct...
Here's a list of some of the other popular desktop environments:
KDE (K Desktop Environment--looks really awesome, customizable, but you need a capable video card)
Xfce (some say it stands for "X freakin' cool environment," but it's up to you--looks like Windows 2000, but is highly customizable to look like Gnome2 <--which is extinct
LXDE (looks like Windows 98--the lightest desktop environment around--but can be made to look close to Xfce)
There's also window managers like Openbox and Fluxbox, they look really minimal, but they are also highly configurable to look damn good