I finally retired my Manfrotto 458B tripod effective today. After almost 5 years, the auto lock feature on one of her legs was acting up and after a few close calls, I just lost all faith in her. I might send her back to Manfrotto and see if they can fix her, as I'd like to keep her as a back-up.
I've had my eyes on the Really Right Stuff TVC-33 Versa, and I finally bit the bullet last week and ordered one. She arrived last night, and as soon as I pulled her out of the box, it was love at first site. I immediately decided to name her "The Beast" because she's rock solid. I couldn't wait to try her out, and today was quite the test with four different shoots.
All I can say is I wish I'd gotten her a long time ago. Simply amazing!