Apologies for what I am sure has been answered elsewhere, but my searches were unfruitful.

What's the difference between the 7000 and the 7500?

According to Philips' website, only the 7500 is available, so I assume it's the only current model with this form-factor). (I read elsewhere that the 7500 is now discontinued and scheduled to be replaced later in the year).

I'm thinking of bidding on a "barely used" 7000 on eBay. Just curious how "obsolete" the 7000 is.

thanks.