Best way to define a parent page to allow embedding of XAML.

What's the best way to display content in a page with a standard layout throughout the application?

I have an app that has a fixed format page layout with a header containing buttons a footer and a bit in the middle that I want to swap out as I navigate around.

<ContentPage>
  <ContentPage.Content>
    <StackLayout Orientation="Vertical">
      <Label Text="{Binding Item1}"/>
      <Button Text="Options" Command="{Binding ACommand}"/>
      <!-- my content here...-->
    </StackLayout >
  </ContentPage.Content>
</ContentPage>

My options are:
1. Use a ContentTemplate
2. Use views.
3. Cut and paste outer into each new page.
Which is best?

Detail below....

1. Use a ContentTemplate

My xaml would then look like...

<Application.Resources>
    <ResourceDictionary>
        <!--template theme 1-->
        <ControlTemplate x:Key="MyTemplate1">
            <StackLayout Orientation="Vertical">
                <Label Text="{Binding Item1}"/>
                <Button Text="Options" Command="{Binding ACommand}"/>
                <ContentPresenter />
            </StackLayout >
        </ntrolTemplate>
    </ResourceDictionary>
</Application.Resources>

and my page....

<ContentPage>
    <ContentView x:Name="contentView"
               ControlTemplate="{StaticResource MyTemplate1}">
        <ContentView.Padding>
            <OnPlatform x:TypeArguments="Thickness" iOS="0,20,0,0" />
        </ContentView.Padding>
        <!-- My content here-->
        <Grid>
            <Label Text = My clever page content" />
            <!-- I can put anything in here..... -->
        </Grid>
    </ContentView>
</ContentPage>

The advantage here is all my pages are logically seperate.

2. Use views.

I define a view for each of my different pages

<ContentView x:Class="MyApp.ContainerView">
    <Grid>
        <Label Text = My clever page content" />
        <!-- I can put anything in here..... -->
    </Grid>
</ContentView>

and....

<ContentView x:Class="MyApp.AnotherReallyCleverContentView">
    <StackLayout Orientation="Vertical">
        <Label Text="Page1's content."/>
    </StackLayout >
</ContentView>

and then pages are ...

<ContentPage>
    <ContentPage.Content>
        <StackLayout Orientation="Vertical">
            <Label Text="{Binding Item1}"/>
            <Button Text="Options" Command="{Binding ACommand}"/>
            <views:ContainerView />
        </StackLayout >
    </ContentPage.Content>
</ContentPage>

and I can then swap the views out programatically, doing something like....

 ContainerPage = new MainPage();

 ContainerPage.FindByName<ContentView>("Container").Content = (ContentView)Activator.CreateInstance(AnotherReallyCleverContentView)