Tiger Cache Cleaner tunes for Broadband, Narrowband, Dialup, and restores defaults. It also repairs permissions, runs maintenance scripts, rebuilds prebindings etc, force empties trash, deletes files and folders, gives systems info, and deep cleans caches. I do not know if it does as good a job as this app on tuning for broadband, just thought you might find this info interesting. Tuning and optimizing are two different claims. Maybe try both?