Seriously dude.
How many people have told you that you don't need to buy anything else?
You aren't getting shitty recordings because you have shitty gear.
You're getting shitty recordings because you're shitty at recording.
The people who record (not the "artists" - the behind the scenes engineers, mixers, producers etc...) the tracks you are trying to match in quality could take EXACTLY the same gear you have - they could come over to your house - and make better quality recordings.
It's because this is not about the gear.
It's about people with years of experience doing what they do professionally for large sums of money.
In two months, you will absolutely absolutely not match or beat that recorded quality.
You could have unlimited funds and every piece of recording equipment ever made.
You could have the best rooms in the best studios in the world.
If you were doing it by yourself, you'd still probably make a shitty recording.
Look at it this way.
You're going to university in a couple months, right?
I think I remember from another thread you saying you were pursuing physics.
Why go to Uni at all?
Just spend the next two months applying to whatever physics based job you hope to get?
By the time you would be starting school, you could already be started on the career you hope ultimately to have for the rest of your life, right?
Wrong.
You go to school because you don't have the knowledge or the experience to even come close to understanding or contributing anything meaningful to your chosen field.
Why would you assume it's different in any profession?
I'm not saying you have to go to school to record.
If that was the case, boards like this wouldn't exist.
But you do need knowledge and experience. And you can't buy those from Sweetwater.
Why does this have to be done before you go to school?
A preamp, a microphone, an interface and a computer are fairly portable.
And I assume you'll be living
somewhere.
It's the nature of home recording that you make do with what you have.
So you're gonna be in a shitty dorm room or something?
Deal with it.
Make it sound as good as you can and continue to hone your craft there.
Don't expect greatness, expect improvement. You'll see it if you quit worrying about what you don't have and start worrying about making what you do have sound as good as possible.
And quit searching the boards for exactly the problems you have.
You are, based on my reading of your multiple questions and answers, an "ultimate noob."
So just start reading everything. There are thousands of threads here.
Millions of responses (probably).
Get learnin.
Ok, rant over.
Now, if none of that seems like the advice you want, then here:
http://www.vintageking.com/ADL-670-Stereo-Tube-Limiter
You aren't getting the quality you want because you don't have that.
That's the magic bullet.
It's the reason everybody else's recordings sound awesome and yours sound crap.
The big money producers get paid the big bucks because they have access to that, and you don't.
If you can't afford it or just don't wanna pony up that much, well then, you're always gonna sound noob and never sound pro.