The one that comes up most often is keeping 2P in NSUD.
  
  Others include:
  Keeping 5OAK with three deuces in NSUD
  Keeping 1 gap 3SF with one deuce in NSUD (except 4-6 and lower)
  Keeping 1 gap 4SF with one deuce over a straight in NSUD
  Keeping 2 gap 4SF with one deuce over 3OAK in NSUD
  
  There are many others, some of which have low EV differences (Q high 2RF vs 4 to inside straight). But typically a question like yours is looking more for the differences between the simple strategies rather than "please list the 500 different penalty card differences between two expert strategies".
  
  I freely admit my list of five up top might be missing one or two with EV differences just as big. I play hundreds of hours of NSUD each year, but less than five hours a year of FPDW, so I certainly don't claim to be an expert (in either game).
  
  > On Sep 21, 2015, at 2:48 AM, 007 007@embarqmail.com [vpFREE] <vpFREE@yahoogroups.com> wrote:
  > 
  > >Hi all. As I remember, there are only about 4 exceptions playing NSUD compared to standard full pay Deuces? I believe its related mostly to Royal plays? Can any one post the exceptions? Be appreciated.
  > > 
  > >
  > > Cheers.....Jeeps
  > 
  > There are many more than 4. I don't think it's mostly related to
  > royal draws, though. 2 to a royal, king high, should be drawn to more
  > aggressively in NSUD, but it's not a very big difference. Straight
  > flushes are more aggressively drawn to in NSUD. There are many more
  > than 4 instances of just those. 875s52 is one example. 2 to a
  > straight flush can beat a redraw in NSUD.
  > 
  
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