I am looking for a 3D CAD software that is simple to learn and affordable. Three things I am looking for in particular are: able to work in quad-view (top, front, side, 3d), able to enter dimensions using the keyboard, and able to snap to grid and objects during object creation and editing.
Rhino 5 https://www.rhino3d.com/ is a very full featured CAD software. I was able to quickly get started creating boxes and editing dimensions. I had to search the forums for help on getting objects to snap to each other but it was frustrating because I had to explicitly type the command to use each time I wanted to move or resize an object. It was also difficult because the only way to begin the snap operation was to press the left mouse button, which had to be pressed each time a different snap location was selected. This made editing a very slow process.
Retail pricing at the time this was written (Oct 27, 2017) was a little on the high side and also weird. Windows version was priced at $995 USD while the Mac version was priced at $695.00 USD. There was no mention of a different feature set so this was a very steep cost to run on Windows.
One last thing, when I was ready to remove the evaluation copy of this software I found that I had to uninstall 5 separate packages on Windows. This is not unheard of, but it could have been better.
Overall I would recommend trying Rhino 5. It is worth the time to evaluate and, like I said, is very fully featured. Unfortunately, it just did not meet my needs.