Project Xtension 12 or VPI Classic 3

Why the different cartridges for turntable?

The Ortofon and Sumiko are very different sounding cartridges.

Thanks for the responses.
I am aware that I am looking at expensive components however I feel that in the long run I will save money because I will not have the need to upgrade as I am possibly doing with my current speakers.
Regarding the cartridges I demo'd The Sumiko that came with The Project Table. A dealer highly recommended the Ortofon Cadenza Black and was offering a great price in a package deal.
Any other suggestions would be appreciated.
Thanks

Be aware: Some cartridges don't work well in a unipivot setup.

Analogue is not like digital when it comes to upgrades. With digital, you get something new and it sounds better than what you had, and you are happy for a while. After the newness wears off, you feel compelled to upgrade again. Analogue isn't like that. You may find areas that you would like to improve but you can still be happy with what you have in the mean time. (My theory, of course. Others may feel differently.)

"I am aware that I am looking at expensive components however I feel that in the long run I will save money because I will not have the need to upgrade as I am possibly doing with my current speakers."

Spoken like a true audiophile. Spend $8500 on a record player to save money.

Your spending much too much for a first TT. To maximize the experience best to find an experienced brick/mortar turntable dealer that can help you with your purchase including setting it up in your home. That way all the headaches will quickly resolve themselves and you can get right into the music. As Zd542 mentioned, an expensive DIY first TT is risky. Consider buying a demo or used TT from a dealer with set up included.