Possible packages for Haren are being debated in the other forum with some being unwilling to trade Bruce for Haren and some limiting it to one of Votto/Hamilton and one of Bailey/Cueto.
Haren's #'s are impressive but looking at his game by game performance shows how dominant he is on a consistent basis. In 34starts, he had 27 quality starts (and only a couple were the 6 IP, 3 ER variety - lots of 1 run, 2 run games). With this offense, and pitching against NL lineups and Cordero closing, he's a 20 game winner. The Reds become the team to beat in the Central. An October rotation of Haren/Harang/Arroyo would be very difficult to match up with.
I would start low, and try other options but be very tempted to part with 3 of the big 5 if that's what it would take give the value Haren brings to this team.