I was planning on getting a MBA but am now rethinking it and considering getting a MBP. I really liked the idea of having a SSD, thus part of the reason for considering the MBA. Now when configuring the MBP I see how much $ a SSD is going to bump up the price. What do you people here think.....is the increase in price from a HDD to a SSD worth it? What are the biggest advantages? If I were to go with the HDD can I upgrade to a SSD in the future? This will be my first Mac.....thanks so much for any feedback.