Buy the Pro Version - it is worth the money. Just read the posts and be carefull for the nicks it have. The reality is that all CAD's have their nicks and none is perfect. All of them fail you at one time or other and all have their shortcomings. In all you have to "fit" your own applied safety systems for failure eg. saving every 5 x minutes in different file names ( dwg 10, dwg 20 etc ) and save in a rotational basis. Forget the fact that one CAD can give you all the solutions, they give different solutions to your needs. We have VW, SE synchronous and now I test drive TC V16 as a base CAD again after V12. It is a big surprise. TC V16 is actually really a treat for what we intent to use it for. And the price is very cheap. Take a VW at $ 4.8K , SE at $ 12.14 K ( Converted from our money system ) and then TC at $ 0.2K - can't get better. And the IMSI team did wonders with V16. When we were small we was able to buy only TC and have it from V6.5 but at V12, we dropped it, but then Royal Farros bought the firm and the guys have put their best in - the result is V16 and is far from perfect but a treat. Yeas they need the critical issues of Multi CPU and GPU and 64 Bit as all dwg's are done in 3D now but I believe they will get to it. If you need the heavy stuff for 3D dwg of 500MB and larger, go for VW and SE at the price. They handle it. But at TC did something that brings down the MB's - what I do not know - if I pull in this current TC dwg to VW ot is a heck of an size. So yes to conclude, TC is a treat, it is underpriced for what it gives you, it have a heck of a shortage of symbols, the SI units on the PPM does not always work, it goes down on difficult and intense 3D works, it is fast on dwg's BUT slow on the final PAPERSPACE finalisation, readying for printing, etc BUT overall it gives you more advantages as disadvantages. Seen from the time that Royal took over. And for that I can congratulate TC - IMSI.