Actually it's opening up well in the 91/135 world. Retired from a Legacy several years back and it was pretty tight breaking in. However, times have really changed and I can find as much work (Contract & Mentoring) as my wife & life allows. I will agree with several others that your 121 experience can, and will, be used against or for you, depending on how you present yourself. Just be open, willing (and humble) to learn.