How can I extract information from grouped records?

I would like to create a report of the number of users coming in from a particular IP address and their subnet. Consider the following test data:

$users = @()
$users += [PSCustomObject]([ordered]@{Name='Adam';IP='192.168.4.1';subnet='192.168.4.x'})
$users += [PSCustomObject]([ordered]@{Name='Tony';IP='192.168.5.20';subnet='192.168.5.x'})
$users += [PSCustomObject]([ordered]@{Name='Cheryl';IP='192.168.4.1';subnet='192.168.4.x'})
$users += [PSCustomObject]([ordered]@{Name='Bob';IP='192.168.3.5';subnet='192.168.3.x'})
$users += [PSCustomObject]([ordered]@{Name='Sandy';IP='192.168.5.20';subnet='192.168.5.x'})

$users

Select allOpen in new window

This creates my array of users:

Grouping the above by Subnet and IP should give me a report something like this:

So I use the Group-Object cmdlet:

$counts = $users | group subnet, IP
$counts

Select allOpen in new window

and that produces this:

Now, I can do this:

Write-Host "$($Counts[0].Group[0].Subnet)       $($Counts[0].Group[0].IP)      $($counts[0].Count)"
Write-Host "$($Counts[1].Group[0].Subnet)       $($Counts[1].Group[0].IP)      $($counts[1].Count)"
Write-Host "$($Counts[2].Group[0].Subnet)       $($Counts[2].Group[0].IP)      $($counts[2].Count)"

Select allOpen in new window

which will correctly output what I expect:

192.168.4.x       192.168.4.1        2
192.168.5.x       192.168.5.20      2
192.168.3.x       192.168.3.5        1

Select allOpen in new window

But if I do this (which I would expect is the same thing):

 $counts | ForEach {
    Select -Property {
            @{n='Subnet'; e={$_.Group[0].Subnet}},
			@{n='IP Address'; e={$_.Group[0].IP}},
			@{n='# Users'; e={$_.Group[0].Count}}
    }
}

Select allOpen in new window

I don't get any output.
What am I doing wrong?
Thanks.