Fusion 360 is the same price as OnShape for home/hobby users - that is, free - and doesn't seem to have the same storage limits. That's one reason I use it; the others are that it seems to be a bit more powerful than OnShape and with more fancy features (although that comes at the price of a bit more complexity) and that it has a pretty good built-in CAM package. Although it is 3D, you can in effect use it as a 2D drawing package (and export DXF files if you want). I used to use TurboCAD but now do even simple drawings in F360.