Tough one but Chris Davidson deserves another look, more games for Hull than Dean & Harkin added together and good enough to play for Yorkshire, which is about the level they were at (I liked both Dean & Harkin BTW). Do you go for the better quality of Sterling or Entat despite their short Hull careers or the longer service of the good but not great? Caswell I obviously know nothing much about but 3 Wales appearances suggest a Dean, Harkin, Davidson standard of player.