P5W-DH Deluxe versions?

I've been thinking about building a comp around the P5W-DH
Deluxe/E6600 combo. In today's Fry's ad, just that combo is listed as
a package for $521, a pretty good price. I'm always a bit suspicious
of such offers, especially since I've had problems with returns at
Fry's. My question is are there outdated/inferior versions of the
P5W-DH Deluxe that I should be aware of when evaluating this purchase?

Thanks very much.
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