well for me personally, when i have either of my two favorite players, i dont move them at all. vladimir guerrero and carlos zambrano.
chuckles i dont really gravitate towards other than the draft, but vlad i'll usually make an offer early of someone like a manny or ortiz, knowing i'll lose out on RBIs and stuff, more htan likely, but i always see it like hey win or lose i like to stick with the guy who i have three jerseys of =D
edit: oh and this year i essentially traded soriano for shelton and crede. keep in mind i have brandon phillips proudly manning 2B. he's pretty damned hot right now, but he was purported to be a hot prospect in the expos system a few years back, i believe he was traded to cleveland in 2002 along with cliff lee in the bartolo colon trade (a total raping of the expos farm systme by shapiro, as lee and phillips were the pride of the fam system at the time)
phillips never did well in cleveland, and with incumbant ronnie belliard he never got a shot. cinci nabbed him despite having womack signed to play 2nd and also having freel able to play 2nd, hell felipe lopez could play 2nd as well... but they got him, plugged him in, and he's at like .350/3/23/3 right now
hey .290/20/75/20 would be a total blessing, and i thik thats entirely possible with him. thats a potent reds lineup with young studs like f-lopez, freel, dunn, kearns, etc. those #s are prolly less than what soriano's got going on at the end of hte year, but i think factoring in that technically i'm putting up shelton and crede against soriano (this league has crazy depth, in addition to the infield positions there's an extra CI and MI position) and brandon phillips is just there to basically hopefulyl kind of offset 75% of soriano so basically i just turned him into two productive players.
i think this is hte year crede pulls out .300/25/90, btw , he's had it in him for awhile. absolute peak for him is .320/35/110, but realistically .300/25/90 sounds good for him, a man you can maybe still get for free right now in som eleagues