Ah yes, the never ending CAD debate.
Years back I started using a product called KeyCAD. It worked fine for the drawings I did, and it was a reasonably priced tool for the hobbyist. Time went by, and it was time to upgrade my CAD software, but KeyCAD was no longer available.
We had TurboCAD on a computer at work, and I had many opportunities to learn and use it. It was ok, but didn't really appeal to me for some reason, so I kept looking.
A friend was using QuickCAD from AutoDesk, and let me try it out on his computer. I could see that there was going to be a bit of a learning curve, but it was far more robust than KeyCAD or TurboCAD and was reasonably priced as well. Being from AutoDesk, I figured that the product would be around for some time, so I purchased it for $60 or so at that time (2000) and have been very happy with it. Naturally, newer versions of QuickCAD are not available either! I did find that AutoDesk does offer a product called AutoSketch, which appears to be QuickCAD with a different name. It is a little more expensive, with a current price tag of $200 from Amazon, but I believe I may just bite the bullet on it. Not having to learn a new tool again and not having to try and convert existing drawings would be well worth the cash outlay.
Still, I decided to try a few more of the free tools, such as Google Sketchup, which is easy to use, but lacks the capabilities of the tools that I am used to. It just is not a robust precision drafting program.
eMachineShop was tried, and it actually worked rather well, it produces great drawings and 3D renderings, but it does not allow the user to add any dimensions to the drawing. Works fine to send to the software producer to have them machine a part for you but is worthless for producing a drawing that I can use in my shop. Granted, the producer intended the tool to be used by their customers for submitting jobs for hire, not as a free CAD program for guys like us to use strictly as a CAD program.
I tried DraftSight but for some reason it is not compatible with the graphics card on my laptop. I can draw one item, such as a rectangle, but as soon as I click to draw a second item, it crashes the display and then closes DraftSight. Ixnay on that one.
I am not into the 3D stuff, and 2D is all I really need for my projects, so I don't know that I am ready to give AutoDesk 123D a whirl just yet. I suppose I should try it before passing judgement, but I suspect I will end up purchasing AutoSketch, despite the dinero I'll have to spend.