Try Cool Edit 2000 audio editing software. It has a noise reduction filter that is FANTASTIC. Takes pee out of the pool, so to speak. And it's cheap too--$50 or $60.
Well, if I ignore the word "affordable," and concentrate on the word "best," the answer is Sound Forge, with the noise reduction plug-in. You take a noiseprint from a silent section of the tape, and the plug-in subtracts that noiseprint from the entire soundtrack. This lets you get rid of some amount of hiss, AC hum, and any other repetitive ambient noise.
However, as PAW points out, the inexpensive way to improve things -- especially if the audio is mostly voice -- is to just cut the audio above 8 kHz by at least 6dB.
I'm surprised the vx2000 has that much noise on the audio track. Are you using automatic or manual audio levels? Are you using an external mic? Setting the audio level manually, to the highest non-distorting level possible, and using an external mic, mounted off-camera if possible, both would improve your audio.
dude pick up the CD architect off yahoo. It is bundled with noise reduction 2.0
it works real well. It samples the noise and then removes it from the audio tracks
with a little eq you get VERY VERY close to the original audio w/o the noise.
It works.
auggy
ps just go to yahoo shopping and do a search on cd architect.
but if you do make sure its the bundle about 150.00 bucks full non academic version.