Bobby Abreu. Ive have had him for 5 years in my keeper league and he's been my rock all this time. Smoltz is one. Chipper I thought was one of those but I ended up trading him and Mulder for Tracy and Buerhle to a guy who just wanted Chipper cuz he's also a Braves fan. So for once I went with my head and not my heart.
Other guys I would have a hard time giving up are Ortiz, V-Mart, and Sizemore.