I am told the black is very critical in picking up noise from dirty vinyl.
That's not true. First of all i assume you play NEW vinyl, not a 40 years old vintage vinyl or not? So why do you expect noise on a new vinyl and why do you think a new vinyl is dirty by default ?
If you play old vintage vinyl (like i do) the
Shibata, LineContact, MicroRidge
are so much better than Elliptical, because it can ride on a virgin part of the groove walls, not damaged by previous owner with Conical or Elliptical stylus decades ago.
With Shibata, LineContact, MicroRidge stylus profiles you can only improve the sound quality compared to Elliptical profile. This is upgrade anyway. A lifespan of those styli are much longer!
Read more about different types of styli here
Only digital aficionados are talking about noise coming from vinyl.
$700 is fine for a great cartridge, but probably not enough for a good turntable and definitely enough for both, so you can do step by step.
I would recommend to look for new Technics released this year:SL1500s
with build-in phono stage and phono cartridge ($1399 in the USA) or SL1200MK7
for $1199 in the USA.