I have both trueSpace 6.6 and Carrara 3. Although trueSpace has a lot of power, it isn't as usuable to me. I just can not get a grip on the interface. Don't get me wrong, trueSpace can produce some great models; just not from me. If you have a choice of Carrara or 3DS Max, I would go with Max. I just can't justify the cost for my uses.