I may never be able to figure out the schemes and patterns that various manufacturers use in order to keep customers of such stores as Costco and BJ's uninformed about the actual models of TVs and home theaters they are selling through these distributors and how they compare to the rest of the crowd. It seems to me though that Sony Bravia DAV HDX-274 is very similar to Sony Bravia DAV HDX-275, which is offered at the same proce at SonyStyle.com. Here is what Sony has to say about this product:
The Sony® DAV-HDX275 BRAVIA® Theatre System includes an integrated 5 DVD/CD changer, 1000 watts of home theater power, and an included iPod® Dock. With the optional S-AIR® receiver/speakers system, you can now easily send your music wirelessly to another room in your home. Using exclusive Sony® Technology, S-AIR® brings the promise of multi room audio distribution that most anyone can set-up, it's that easy. DAV-HDX275 comes equipped with DIGITAL MEDIA PORT that works with various accessories (sold separately). The DAVHDX275 can control a select number of BRAVIA® televisions with BRAVIA® Sync via the HDMI™ interface. With "One Touch Play," operations that took several steps have been reduced to one. Also, HDMI™ interface upscales DVD media up to 1080p This BRAVIA® System optimizes speaker placement in just 30 seconds with Digital Cinema Auto Calibration.
The manual for HDX-275: http://akamaipix.crutchfield.com/Manuals/158/158HDX275.PDF
In my humble opinion, a very decent home theater system. Most importantly in my opinion is a digital-in port. Of course, this system is designed to perform at its best with a Sony Bravia TV.
See also:
Media room design: ideas and solutions