ISOS 7 wasn't bad at all.
And tiesto may not be as great as he used to be but he is still very good and can easily make crowd pleasing tracks or go back to his roots but its his call to keep trying new stuff and a lot of people still like him.he may be attacked almost on every forum around for reasons i don't even know,but in the end his ticket sales are still sky rocketing.
Not too many are as good as they used to be anyway,same thing will apply years later on whoever is your favorite dj at this moment.