Dokken are essential - my favourites Under Lock & Key, Tooth & Nail, Back for the Attack. Also Don Dokken's Up From the Ashes. The rest really are sub par by Dokken standards I think. Disfunctional I think is average when you compare it to the above 3 classics.
Rush. A band of many era's 2112 and Hemespheres are classics! Moving Pictures just as great but more accessible but just as essential. Alex Lifeson's Victor is another nice side step that is worthy.
Other newer things I am listening to that I can recommend.
Pink Cream 69 - Thunderdome
Kansas - device - voice - drum (double live)
TNT - My Religion (another essential hard rock band)
Last Autumn's Dream - (Europe style - well three of em with diff guitarist and singer)
HIM - And Love Said No (greatest hits?) (rock version of Type O Negative)