Greetings
To OP
I didn’t read what type of phono preamp you are presently using. If you only have a MM phono stage, then yes you will need a SUT.
The cartridge’s that you list can easily be used with most MC phono stages. Any MC cartridge above 0.2 mv should work fine with most MC phono stages, with a gain of 60 to 65 db.
‘If you just want to experiment with SUT, go for it but be warned that picking out the wrong one is throwing money away. Also picking out the wrong one will give you lots of HUM for you to listen to.
‘I recommend that you read the article that is located in the “Vinylengine website” titled Step Ups and MC Cartridge’s. It is very well written and wealth of information. It was written in 2006 but still applies today. It has all the info you need to calculate the correct SUT for your cartridge.
The bottom line is that going for a dedicated MC phono stage is the best way to go.
Just for reference I have 3 dedicated MC phono preamps and 2 MM phono stages. I also have a Denon AU-S1 SUT that I use with and only with my Denon DL-S1 cartridge. The DL-S1 has an output of 0.15 mv. Can be hard to drive do to it being below 0.2 mv.
Joe Nies