Soundforge is easy to use, but as they said, all the software in the world won't help you. What program are you using to record? assuming you're using a DAW.
It may already have the functions you need, unless you're looking for presets...no matter what all these people say to make fun of me, sometimes with a particular band you can have an "equation" of sorts. You know what sound they have and what you almost always need to do to make that sound sound the way you want it to (compression ratios, eqs, etc). I have a punk band I'm working with and I have a thing I almost always do the same way for vocals - deess almost always in the 12.5-16kHz, and crunch the shit out of it. Then for "mastering," I realized I was happy with
a soundforge preset. I just use wavehammer and use the preset "limit at 6dB and maximize." I could just do it with a compressor, or I could just click a couple buttons and bring up the preset. All I'm saying is that yes you do need to have an ear and know what you want to do, and just having the software won't help you do that, however, if you do have the software and screw around with it, you may find a preset or something that works for you, so you don't necessarily have to know what's going on. What ever sounds good will work for you, if you can get the results with your current software, just use that, spending $500 on some software may help you or it may not, but in the end it's all up to you.
I think I just made and "argument" on about 4 different topics...in short, any of them will work, but just having them won't polish your work, or maybe you'll get lucky.