I'm wondering if you know any easy but impressive etudes.
Don't really see the point, however, unless it's for an audition.
Have you checked out MacDowell, Moscheles, or Moszkowski etudes? They are usually used as precursor to Chopin or Liszt etudes. Have fun.
Realistically, you won't be playing an etude if you don't find it difficult
Op 10 No 3 is slow, and relatively easy in terms of technique.
Morton Gould: Boogie Woogie Etude - I'm in love with this, I'm not quite sure how difficult it is
I really enjoyed this piece... is the orchestra really necessary? Saw a number of solo piano recordings w/o the orchestra