MM Cartridge Recommendation

Hello Everyone, 
Over the past year I've been slowly building up my first system and have just recently upgraded my turntable to a Clearaudio Concept w/ Satisfy Carbon arm.  

My current total system is as follows:
- Belles Aria [Integrated w/ MM phono] 
- B&W 705 [original series from 2004 stand mounts w/ matching stands]
- Clearaudio Concept w/ Satisfy Carbon tonearm 
- Ortofon 2M Black MM cartridge 

Overall I've been very happy with my system especially working within a reasonable budget.  
The Clearaudio has also been a great upgrade from my original entry level [U-Turn Orbit] turntable. 
I bought it used with the 2M Black already mounted, and it is very smooth/neutral sounding with a lot of detail. 
However, at times I find it almost too neutral.

Would anyone have recommendations on another MM cartridge to pair with my existing system?
I'm still trying to determine if I may like another sound better [perhaps more warmth or even just comparison for a different sound] as I explore and still learn what sounds I like. 

I know many people prefer MC, however at this time I do not want to add a MC phono preamp to my system.   
I'd consider HOMC [ie Hana cartridge] but I'm not sure if they would work within my exiting Belles Aria MM system?

My budget is ~$800. 
My preference is to buy new however would consider an easily accessible used [I just don't want to have to search for some obscure hard to find cartridge].  

Also please keep in mind that I am still new to this hobby so am by no means an expert in cartridge setup & alignment. 

Any advice or feedback is really appreciated! 

Thanks!