Replace 2M Black or new phono?


Hi,
newbie here 
Less than a year ago I upgraded my old turntable to new Pro-Ject 6 Perspex SB table with Ortofon 2M Black cartridge. Additionally I bought Pro-Ject Tube Box DS2 phono preamp. 
However, after using them for few months, I tried switch from Tube Box to my integrated amp phono section (Yamaha A-S2100) and really it wasn't so much drastic better or worse result. So I sold phono preamp. However, I began to think maybe with additional cash on the hand, I could sell 2M Black and get in MC cartridges category.... 
Because yes, 2M Black is nice cartridge, and it was big improvement and difference in sound quality from my old Audio Technika AT95E cartridge. However, no offence, just 2M Black is not suited for my perception of cheerful sound. It's very detailed, very "scientific" - ideal reviewers cartridge 

So, my dilema is - what to buy first: cartridge or new phono preamp. However, I got dealer which has AudioTechnica / Ortofon / Denon / Grado / Nagaoka and I can get them cheaper, and sometimes even test-drive.
And with phono preamps is harder, my dealer sells only Pro-Ject and Rega (which both I don't like). So I was reading good reviews, and thinking about Primare R32 phono, which I could buy only online and without listening in my system.
However, if my Yamaha A-S2100 MC integrated phono section is capable to drive and give at least 40-50% of cartridges capabilities - I would take that sound experiment. At the moment I would say, that I'm looking for a different sound signature, not absolute quality.

My cartridges shortlist:
- AT33PTG/II 
- AT33EV 
- AT-OC9ML/II 
- DL-103 or DL-103R 
- Quintet Blue

What's your thoughts? Maybe someone made similar moves or have more educated opinion than me?

My system, if matters:
- Yamaha A-S2100 amplifier
- Yamaha CD-S2100 CD/SACD player
- Pro-Ject 6 Perspex SB turntable with carbon 9 cc Evolution tonearm
- Spatial Hologram M4 Turbo S speakers
- QED Xt40 speaker cables / QED Reference Audio 40 RCA & XLR interconnects
manfredas
Well, the cartridge change everything even if you’re using average headphones, this is the most important component in analog chain and the only one in contact with the record, if you don’t like the sound from the start you can not really change it that much by any other components. I don’t think you’re going to swap phono stages or speakers every month. The most economy way is to change cartridge and it does change the sound of everything. Some carts are just not involving at all, some are amazing and that’as the reason we are buying many of them. Having at leasts 3 different phono stages and various tonearms/turntables i’m pretty sure the cartridge is much more important when we’re looking for "our sound". This is where the magic begin.

With the tube phono stage you must be very careful with the tube itself, i do not use tupe phono, but i use tube amp and nothing can beat NOS military vintage tubes, for some reason they are just better than new. What you can change in addition is the tube! I'm a big fan of Sylvania and Telefunken from the 60s. 

But anyway, the cartridge is the most important to start with.
Thanks for amazing insights and support!I think I'll test some other cartridges from my dealer first, and then - will see... :)
@chakster You keep telling everyone the cartridge is the most important.  It isn't. The turntable and arm are critical to the correct functioning of the cartridge. An excellent table and arm with a cheaper cartridge will beat out a great cartridge in a weak table and or arm. 
Hi Manfredas - I have the same turntable as you.  I had a 2M Black and now am running a HOMC, the Sumiko Evo III which, subjectively to me, sounds a whole lot better.

I'm running mine into a Schiit Mani preamp that is separately powered by an upgraded linear power supply.

Nice setup and reasonably priced for the quality of sound that it puts out.

Since you have the SB version of your table, you don't need the speed control as suggested by an earlier poster since your setup has it built in.

BTW - Not at all surprised that you weren't happy with the Project Tube box - I've yet to come across anyone that's liked them.

Greg