Corel Vector is fantastic, been using it for years (gravit designer). No other online vector drawing app comes close!
It would be slightly improved yet if there was a way to set the origin of the coordinate (0,0) to any location on the page, which is usually accomplished by dragging the corner of the rulers. I cannot find a way to do that, seems like an oversight?
This would also be resolved if it were possible to save an infinite canvas (since this would also enable designing around the origin).