Verizon
Nope, our guys don't suggest them. We are corporate customers so next time I'm in the store I'll ask their policy. Should be able to get a straight answer out of them and if they do push them maybe a reason they think it's beneficial.
VZW already installed lots of stuff that I don't want so I'm not too upset if they put a task killer on. At least I can take it off without rooting.
The fact that task killers don't come pre-installed is indicative of the fact that the smart people who know Android at VZW corporate know they aren't beneficial.
Task killers DO some times make your phone faster, but so does a reboot. I think the reps just put them on for the placebo affect for the customer more than anything. They think it's better.
Watchdog is where it's at though. That'll identify the problem apps and then you can just uninstall it.
Although the Social Networking app on my DX regularly pegs over 40% CPU and I can't uninstall that, thanks VZW.