G'Day Bob,
I have been using TurboCAD Deluxe V5 & the V6 for Mac for a couple of years now & I am happy with the performance for the money AUD$150. I mostly produce 2D working drawings & the software does this very well. There is a good forum for TC for Mac & if I have had a problem, it has been solved quickly & accurately from the forum members.
Regards,
Don.