There is a big difference between the like of Phillips and Cordero. Cordero has shown to be a volatile closer during his tenure as a Red. Going forward you have to wonder if he will be able to land a closing job heading forward. I don't see a team paying him 10M/season over multiple seasons. Cordero really rolls the dice if he decides to run down arb and enter free agency. On a side note can a team buy a player out of his option and then offer him arb?
Phillis on the other hand is a guy who could demand a nice free agent contract when he enters FA. You pick up his option, try and sign him to an extension, all the while knowing that if he doesn't sign he will be a Type A FA. I don't see anything wrong with picking up his option for next season and then going from there.