Gary,
I think the wagon gang has spoken, go with the comfort shocks.

However (here it comes) I will say this if you are going for an amg look you may also want that feeling, from my experience my wagon feels more like my amg than my 300d...and if that's what your going for...you may want to consider the HD.

I know MTUpower said the comfort shocks "handle better" and I'm not going to argue with that, because come on, it's a 20 year old diesel wagon...when it comes to handling with these wagons between these shocks it's six of one, half dozen of another. But the feeling is without a doubt similiar in basic driving i.e. firm and stiff.

I wish I had the comfort shocks, don't get me wrong. Everytime I go over a speed bump my 7 months lets me have it....but they were cheap and new and on ebay, so my impulses won that round...

jason