Your call at the end of the day, I dont see anybody else adding there recommendations, or advise.
All im saying is that a fair few years ago i bought my first flat TV which cost 3000k, at the time it was the dogs, i bought my latest TV 18 months ago for 600, and its shown just how bad the old one was, and how much things have come forward and reduced in price.
In terms of hard to please, i listen to sound systems every day of the week, and have to spec them as part of my job, so i can not afford to put in sub par systems, i would just get complaints.
The price of the system is cheap yes, but it was originally over £500 at launch, which when you see the system you think its expensive as the speakers, excluding the sub are tiny, you also have to factor in the cost of a receiver as the speakers are passive, so in hind sight the system would have cost you over a £1000.
I will also add in reference to your current system, that over the years i have repaired quite a few, the speakers are prone to fail, or break up in sound.
I only use Denon for DJ equipment now