My problem in responding to questions like this is that I'm too cheap to go out and buy every software product out there, and too ethical to use cracked/pirated software. I am a die-hard Sonic Foundry user (Sound Forge 6, Acid Pro 4, Vegas 5, CDA2), and so it makes it difficult for me to give advice just because I don't know the software being asked about.
But this may be relevant. The thing I love about Vegas is that everything you do is non-destructive. You can chop up an event, eq the smeg out of it, add tons of fx to it, mangle it all to hell, and still the original file is left alone. This gives you lots of room to make mistakes and try again.
So, my initial answer would be, "Yes, Sound Forge would be great for manipulating individual files. It has lots of plug-ins and is easy to use."
But I would caution against doing anything that you can't later undo. At the very least, mess with a copy of the file.