Custard Cream Memory Stick Whats The Difference Between Philadelphia Style Ice Cream And Custard / Cream Style?

Whats the difference between Philadelphia style Ice Cream and Custard / Cream Style? - custard cream memory stick

I looked at the recipe for my new ice cream maker and a good web site has two recipes in a mean, in egg mixture and vanilla sauce emerged as a style, the other is the same without the eggs and called Philadelphia style.

Texture wise it is the difference? The differences in taste? Which is better?

Thank you for your help.