Agree with everyone here. Unless you have a laptop with a single drive slot, and can't afford a 512GB or 1TB SSD, then this is a good compromise. If you don't need the capacity, SSD is a no brainer due to the performance boost.
For desktop systems, shoot for a SSD + HDD setup to get the best of both worlds (speed + capacity). OS and apps go on the SSD, and media files on the HDD.
Whats the price of a good SSD now? Looking at 200+gb and above. Does it comes with a sata cable? Or PCiE card is better?