Hi Alan
I have hesitated to add a follow-up to my earlier comments, as you have already ordered your cartridge, and I am sure you will be pleased with your choice. The Denon is a great choice for your arm.
My comment, and perhaps Sean or others can chime in on this, concerns the issue of output voltage of the cartridge and how THAT affects the overall sonics. In your case, I am sure you will have more than sufficient gain, since you are using the Cotter transformer. However, something you might want to consider is what I have experienced IN MY SYSTEM. I have generally preferred using a higher output cartridge when my phono stage was of the lower gain type, as opposed to using a step-up device. I have used Electrocompaniet, Counterpoint, and Koetsu step-up devices in the past. My experience has been that using something like a Grado or higher-output MC gave ME a more natural sound as opposed to adding the extra electronics and cabling of the step-up to the signal of an ostensibly better quality low-output MC. The same way that, even with my high gain preamp (Melos), in some ways, sometimes the best sound is achieved by using the lower gain setting with a higher gain cartridge. The music is less electronic sounding even if I give up a little bit in detail retrieval. This has nothing to do with arm/cartridge compatibility. Of course, as with most things, this is all relative. In your system the results may be different, and at some point the advantages of a really great (and expensive) cartridge (assuming it is compatible with your arm) will supersede the "losses" of using more preamp (or step-up) gain. Might be worth experimenting with a higher gain cartridge as well as with as your Denon at some point.
Just food for thought, and good luck and enjoy your ET-2/Denon. Great arm. Make sure that the bearing tube is ABSOLUTELY clean, and if you are feeling ambitious, clean the capillaries in the housing. I found that the sound was deteriorating over time, and I traced it (with Thigpen's help) to clogged capillaries. A bit of a pain, but worth the effort.
Good luck and keep us posted.