my wife went from using the stiletto to lexa. She is very glad to have made the switched. for her the stiletto was too flexible and softer, she wanted a more responsive binding so i got her lexa three years ago. She loves it very much. I know dogfunk.com has sales on burton stuff right now.
Marginally stiffer and about the same responsiveness as Lexas. I didn't like ankle strap, it was too wide and created a pressure point for me. Other than that it's a nice high-end binding with that snappy agility that most Burton bindings have.