Satisfied
No matter how satisfied I may feel with something at the moment, when I look back on it six months or a year later, I tend to cringe.
In all the writing I've done, in all the things I've sold, I've had exactly one piece puiblished that even now, almost fifteen years later, I still think is as good as I can possibly write. I still wouldn't change a single word of that piece. There are a couple of others that I'm still perfectly satisfied with, but know I'd write a bit differently now. But with these exceptions, there's nothing I've had published that I wouldn't love to have a crack at rewriting.
Not that I'm at all sure it matters. Some of the stories I believe are my best writing never sell anywhere, and some of the stories that I believe are written horribly sell first time out and keep selling.