UPDATE: After thinking it over for a few days, I went online to see if any big box retailers had this 5.1 system for a better price that was had via buying online (Amazon, Newegg et al) and found that Fry's actually had it listed on their site for thirty bucks cheaper than the best online price I'd found. I was still on the fence though, so I swung by the local Fry's after work to take a look and found the same system marked down an ADDITIONAL fifty bucks!
Needless to say, I pounced on the deal. Got the system set up in under an hour (also switched out my existing sub for the Polk sub that came with the set) and after some slight finessing of the settings, realized that I'd made an excellent purchase. All the good things you've heard about this little 5.1 system are true. HIGHLY recommended for the budget-wise home theatre enthusiast.
Oh, and for the record, I'm using Premier PSPK-2B speaker mounts to hold up the rear surrounds and have had no problems whatsoever.