What Units do you Consider Essential for Germany?

Three units not to leave home without: Tirpitz, Bf-109, U-510. Munch, munch.

<Edit> OOPS!  I thought we were talking War at Sea!  Wrong section!  

There's a couple of ways one could look at this question:

1) which units are competitive?
2) which units are iconic?

Sometimes a unit is both. I'm a fan of elite infantry, so I often take the Hampsterfuehrer and a mix of SS Panzergrenadiers and SS Stormtroopers as a core of my German lists.

On the iconic side, I have a weakness for the big cats. I especially like the Jagdtiger because it's just so beefy.

If I'm trying to fill in some space with a bit of cheaper armor, I have lots of choices: Elite Panzer IV Ausf D, Panzer III Ausf F, Stug III Ausf D, Veteran Panzer III Ausf L...

These threads call to mind an interesting exercise from last year: forumini.boards.net/thread/825/tournament-ii
If I want to check whether a build makes sense competitively, I take a look at that thread For example, I didn't know before how important Grizzled Veteran is for lists with infantry.

SS Hauptsturmfurher
Mausers
Wehrmacht Veteran Infantry
MG-34/MG-42
Pnzr IV F2 & G

Tiger I
Panzer IV Ausf F & Ausf G
Panzer III Ausf D/E and Ausf J/L
A bunch of K98
WE Ober LT
Panzerfaust
SDKfz 251s
Trucks

With those units you can cover almost any theater from late 39 to 45