I have been tempted to get both the Pershing and the T-34/85 r/c (that is based on the Trumpeter kit). The one thing that has discouraged me is the 1/16 scale. I know they will both look way too large beside my 1/18 tanks....and certainly way large if they were compared to a 1/18 T-34 or Pershing.
However, something i have noticed in my years of collecting is that, if there is nothing around for comparison, it is very difficult to tell if something is 1/18 or not. I've been fooled many times in stores, toy shows etc by an object that i thought, just by looking at it, was 1/18 only to find that in fact it was a much larger or much smaller scale, once i measured it or compared it to something known to be 1/18.
Because of this i've decided to get the 1/16 r/c T-34 (they are starting to get reasonable in price). I'm going to display it off on it's own (being engaged by a German anti tank gun i'm going to scratch build

). If i don't display any figures with it and since there will be no other vehicles near by, it will be very hard to tell that it is a bit oversized. If i just plunked it on my shelf with my other tanks it would be pretty obviously too big.....at nearly the size of the Patton.
I still hope and believe that we will have a proper 1/18 T-34 some day, that i can cover with Russian tank riders but in the meantime this will satisfy my 5+ year long desire for a T-34 in my collection.
I guess i'm starting to mellow in my old age (or just get fed up) and starting to compromise somewhat, as i've got a few 1/20 scale aircraft now plus my Great Planes DC-3 (with the 1/19 wings and 1/21 fuselage).
but they're so fun....sigh.

i never met an airplane i didn't like...