I like the Whermacht as you can play more realistically. Artillery barrages, then roll in the armour, infantry on the flanks. So much fun when it works.
I like a mixture of panzer IV's, V's and Ostwinds. You can still advance even your infantry is killed or forced back and not have to worry too much about infantry attack.
With the US ranger spam usually does the job, I hate a ranger blob just rushing through my bunker or mg line, shouldn't be like that.
That happened in my last game, but I held them off and counterattacked with armour and nebelwerfers. Won the game despite my two allies dropping out!
Should post the replay.