Natural Origins or Lab-Made Beauty?
The most important factor in your decision on moissanite vs diamond — even more so than cost — will be whether you'd just prefer to have a diamond or a moissanite.
Some consumers prefer diamond for tradition, prestige, or natural origin. Others prefer moissanite for sustainability or ethical reasons, or simply because they can get the aesthetic they desire for less. This is a personal choice with no wrong answers. If you'd prefer a diamond, buy a diamond. If you'd prefer a moissanite, buy a moissanite.