Some cartridge recommendations

Thank you for the response, that is the type of info I was hoping for. No reason to get a different cart if will not be a good match and hopefully give better performance, Allen. 

FYI, I inherited this set up from my 92-year-old uncle, it is very vintage and mostly unused. I was looking to see if a more modern cart would be a good idea. Sounds like possibly no. I also have all his vinyl (in very good condition) and was wanting to get playback a little closer to what I am used to. A bigger sound stage and frequency response at both ends. This set up has good tone just seems a little flat. 

My Integrated can handle MM or MC carts it is full adjustable by dip switches inside on the phono card. It is however fixed at 50 db of gain.  This is the newest Modwright integrated, KWH 225i.

After looking at the Soundsmith website it appears all their carts like more gain than I have available.  They say 58-64 bd for gain. 

I have had the TT checked by a competent local tech and it is in perfect spec and near perfect cosmetic condition. I have it setting on its own steel table with a 1.75" maple top. (made from a piece of industrial equipment extremely heavy on a concrete floor) It is level and not moving short of an earthquake. 

Thanks again for all your comments. 

I may not have worded my question as well as I could have.

From what I have read and assumed from that; I need to be sure the cartridge is a good match for the tone arm. The table and tone arm are not going to change. So, I am looking for recommendations for a combination that is known to work together. It will be up to me if I like the end result, but at least I will know that I have purchased something that has a chance of working together, thanks.  

The mass of the tone arm is 9 grams w/the detachable headshell, which it does have. Budget is $1,000.00 plus or minus a smidge. Hopefully minus. 

I already have a Step-Up Transformer, I should have mentioned that sooner sorry. It is from Ortofon, says STM 83 on it. Small round unit about the size of an inline fuel filter. I was thinking it would be good to get this out of the system just due to its age, along with the MC10. Maybe I should use what I have. Sounds like it's all reasonably good stuff. Again, I felt like the sound stage width and height was lacking with this compared to streaming Qbuz through my Lumin T2. Tonally it seems mostly ok.  Slightly less upper midrange low treble. I know I will not listen to it very much unless I can get more out of it. I am 65 years old and grew up on vinyl but never had a very good TT just cheap DD Kenwood with an Empire MM cart and later an Onkio with a very inexpensive Ortofon. The SAE tone arm on this unit cost more than anything I had back then. Since then I have upgraded everything several times to what I think is a very good sounding system. I Would like to play some vinyl for old time's sake but it just seems a little dead to my ears.

To recap system Modwright KWH 225i, Lumin T2, Oppo 105D, Tyler Acoustics Woodmere II speakers, stereo Rythmik F12 subs. The mentioned Panasonic Sp10/Ortofon analogue rig, All with Synergistic Reasearch Tesla cabling, DHL sub cables.

I may not be saying the right thing. It defiantly has fixed gain at 50 db. The cartridge loading in Ohms is very adjustable. I think have come to realize that with the gain fixed at 50db I need to look for high or medium output MC carts or stick with MM. The feedback I get is the Ortofon SUT I have is pretty obsolete and likely holding things back. It says STM 83 on the side. 

If I were to decide to purchase a newer, modern SUT. What ones should I be looking at. Let's say < $1,000.00, thanks.