I got the mack daddy IK multimedia bundle, Amplitube 2, ampeg svx, classic reverb, sampletank, sonicsynth, mirislov philharmonic, and T-racks. I decided to get them in spite of the crappy LE versions that come bundled with pro tools LE. The only one out of the LE bunch I even liked, and remarkably still use is the t-racks EQ. I can tell you that I feel that the full version of t-racks is, IMHO totally worth it. I feel that if you got the $1,000 burning a hole in your pocket I think you should get the whole thing. Good thing about IK, they do a cross grade where you get to add stuff at less than full price if you already own one ore more of the things they make. Bad thing about IK, The tech support kind of sucks, but I think its worth it.
That white noise spurt is their way of fighting software piracy.
As far as getting your stuff to sound good on anything, home, car, etc. This is a phenomenon that lots of guys experience. Many will try to buy stuff to add to it or process the snot out of it but that most likely will not work.
What you want is for your mixes to travel well and that means you need to mix in a room that is not colored by room modes, standing waves, and reflections. In short you need to acoustically treat your room.
Bass builds up in corners and can give you the illusion that you have plenty of bass in the mix, then you get in you buddy's car and, no bass.
You can find first reflections by sitting in your mix position (with your monitors positioned correctly) and have a friend run a mirror along the side wall. look for your monitor and treat where you can see it, don't forget the celling.
The back wall is a great place for some diffusion.
It is important to note two things. 1. this is NOT sound proofing. 2. Carpet and egg cartons will not give you the desired effect.
Now I feel its important to point out that almost everyone gets really irrationally mad when people start talking about acoustic treatment but the proof is in the mix. Check out www.auralex.com
for more info. Also there is a great book by Mitch Gallegher about acoustic treatment for the home studio, great read, check it out.
Also, if you are recording 24 bit use a dither to get it down to 16 bit before bouncing to disk.