I had revision rhinoplasty this past October.
My primary surgery (performed by another doctor) resulted in noticeable asymmetry and a hanging columella. Although I was happy with the results, I was reluctant to undergo another procedure because of I feared the possibility of more (and more expensive) unsuccessful results.
After consulting with the doctor that I ultimately chose, I felt comfortable with proceeding and I'm so glad that I did. I didn't experience any complications post-op. I don't even think I had bruising. My results are even better than the computer imaging that was provided prior to the operation. I am especially impressed at how natural my improved nose looks.