Should I retip a Shinon red, or replace it? $350

Basically I am getting a shinon red with a turntable that I purchased.

I need a new cartridge.

Simple question, in your opinion should I try a soundsmith retip for $350 or the same amount of cash on a new MC cartridge?

This also brings about the question old MC's vs. new. Is it true that the newer ones perform better at lower price points then the older units?

I know its an odd question, but I have no real area to audition carts. so I am just trying to figure out what to do.

Thanks - Evan