I do architectural design and SU is not the answer to every problem. If you're doing multi-million dollar designs, heck, spend a couple bucks and use programs that are easier and more powerful. Sure, it can be fun to try to learn and navigate your way through the program, but give me my architectural design software with ease and simplicity and powerful photo-realistic images in a fraction of the time of SU. Play with free. Work with paid for programs.