Although this thread is a done deal (OP ordered his bass), I wanted to chime in with my experience.
Just like with guitar, you can get into a never ending chase for the perfect sound/tone.
I started acquiring basses about 10 years ago... because I was "gearing up" to create a bass sample library.
Little did I know that this would lead to a 10+ year quest... that would ultimately become a
obsession hobby.
Started by going/playing every bass I could get my hands on...
Figured out that I'm not into the modern sounding stuff, I'm into the classics (Fender, MusicMan, Rickenbacker).
Any time I've gotten an instrument outside the "classic" realm, I've always eventually lost interest in it.
Guess that's part of getting older (nostalgia)... but it works for me.
Once I figured out what type/s of basses I liked, I went thru the same process with bass-amps.
Ultimately... figured out I like the big/angry sound of an Ampeg SVT Classic.
Not the most space or weight efficient of amps... but (again) it has that classic tone that I love.
Tried numerous other quality/lighter (more convenient) amps... but nothing has that sound.
Back to basses, I have a Squier 70s Jazz Bass (black body, maple neck with perloid inlays). Put a high-mass bridge on it... and it plays and sounds very good for a $300 instrument.
That said, if you play an American Standard... or especially an American Deluxe, you can feel/hear the difference.
Only you can decide if the difference in quality is worth the additional cost.
One mid-price range of basses that I'd highly recommend is the Sterling By MusicMan line.
Pick a good one... and it's pretty close to the sound/playability of an American made unit.
If you've got the funds, it's hard to beat the quality/consistency of Ernie Ball MusicMan basses (or guitars).
They're also pretty easy to maintain...
My best friend recently got a 5-string Stingray Classic (natural Ash body w/flame maple neck & fretboard) new for $1200 from GC.
That's an insanely good deal for that bass. Beautiful looking and sounding...
Generally speaking, you get what you pay for.
A quality instrument will last a lifetime.