Archer and McNutt were 21 and 20, respectively, last season. That's pretty young. They each put up pretty incredible numbers last season at a very young age. You can't possibly know what they are going to do over the next 6-7 seasons. Grienke is 27. We do know what he did over the last 6-7 years. Some good, some great, some not so good. You might be right that Archer and McNutt will never be as good as Grienke is now. There's a chance you're wrong. Obviously, I'd take that chance if it were a straight up one-for-one deal to get Grienke, but it's likely going to take 3 or four top prospects to get him and I'd rather sit back and see what Cashner, Archer and McNutt can do along with Brett Jackson and Hak-Ju Lee. I disagree simply because Grienke is a top pitcher at 27 and should be very good for quite a few more years (assuming we can re-sign him). Let them pick from 3-5 players from a list of Archer/McNutt (one of them), Gorzelanny, Mateo, Russell, Berg, Coleman, Maine, Stevens, Castillo/Chirinos, Guyer, Vitters, Adduci, Snider, Fuld, etc. There are a few players on that list that are pretty good prospects, but none that are irreplacable. But at what price financially? If Archer, McNutt and Cashner (or one of their other prospects) can be 3 of the 5 starters for the Cubs the next several seasons, think of the money that will be available to sign someone like Pujols for example. But if we keep trading our young prospects for older more expensive ones, we never get that window. Yeah, because pitching prospects are sure things. J.K. Ryu, Angel Guzman, Bobby Brownlie all became superstars. Don't forget the guy with perfect mechanics - Mark Prior.