I'm all for a band to change, and experiment, IF it's done right. What In Flames is doing isn't right in my opinion. The worst thing is definately Anders vocals though, I can't stand them. You know, tons of people, including myself, have wanted In Flames to play old material live for a long time, and when I sat and thought about it, it doesn't even matter. When they play old songs now, they might as well be brand new, with the way Anders sings them. His voice doesn't do the old songs justice anymore. I should have realized this before, when I witnessed Artifacts of the Black Rain played live, but I think I was too excited when he yelled "This one is... ARTIFACTS OF THE BLACK RAIN!!"
I think In Flames DESPERATELY needs a new vocalist. The music itself bothers me a bit, but it's more-so the vocals. While 'Speed' from Soilwork has changed his vocal-style some, you can still hear pieces of the old style here and there... with Anders, you can't. His screeching/whiny vocals need to go.
As for Sentenced, I totally agree. They're one of my favorite bands, and Ville is an awesome vocalist. Dark Tranquillity - I'm happy with the way they're heading - back to the roots. \m/