From the onset of the Obsidian series Corsair has had a trend setting chassis with the release of the 800D. This chassis is outright huge and offers room for everything you need and some. Wire management is top notch and the case is loaded with features. Flat out, there hasn't yet been a chassis I have seen that has made me want to give up my 800D. That being said, the Obsidian Series set the bar super high with the introductory chassis, that many pass it by and say the case is too "elitist" for them, or they can't justify the large sum of money that this chassis demands.
So what is Corsair to do? They set the bar so high that it seems they almost shot beyond the needs of most consumers. To answer that, the 700D was released. While it did lose some of the main features of the 800D, it kept the styling both externally and internally, for the most part. What this did was allow the community to have a choice. The real issue for the release of the 700D was that pricing again took them out of many buyers' lists. At that time the 800D, fully loaded, was near $300, and the 700D missing the key features that set the 800D on such a pedestal, and the pricing was only $30 less. While I liked both chassis', I don't think Corsair hit the "heartstring" of the average buyers, at least not yet.
Almost a year to date since I looked at the 700D, the Obsidian series gets a new addition. Keeping with the same exterior simplicity and styling, this new chassis holds a new interior in a new case type as well. Both of the previous chassis designs were based off of a full tower design, where this time the 650D we are going to be taking a look at today is based off of a mid tower design. With the success of another mid tower, the 600T from the Graphite Series, Corsair thought it a great idea to reuse the interior with this design. Not only should it keep pricing down, since there isn't a vast redesign trying to take away from the 800's interior, it offers you the best of both series in my opinion.
Enough about what I think, let me get you through the specifications and to the pricing. That way we can get to if Corsair has pushed a series too far, or if they have finally found the perfect blend that pulls at everyone's "heartstrings"!