Looking at your question from a different perspective what do you intend to do at the end of the training? You mentioned that you want to create dresses, accessories and furniture. All of the mentioned software packages can do what you have asked and as others have pointed out the main differences is in the workflow of each package but I would ask which software package can you afford to pay for or subscribe to at the end of your training? There is no point in spending a week learning how to use 3ds Max if at the end of the training you can't afford to pay for the software. Whilst a week of dedicated and structured training can be valuable it is still only going to touch the surface of the capabilities of the software so you will have to make your choice based on which software package you will be able to continue on with at the end of the training.

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