The new 2019 release MoYu Aofu GTS is an exceptionally smooth and fast new 7x7 speedcube release.  The most noticeable immediate difference is the smaller size (68mm) which makes the cube both lighter and easier to control.  The stickerless variant comes with a a new half bright shade which looks great and is easier to recognise.  The cube has new slots in the edge pieces for magnets should you wish to self-magnetise later.