A couple of comments:
The straight tonearm is for high compliance (MM) carts weighing between 4-17 grams. The curved arm is for low compliance (MC) carts weighing between 8-34.5 grams. You'll find this in the Service Manual at
Vinyl Engine. In short, your tonearm is very flexible and can probably accommodate any of the cartridges mentioned here.
The modern way to match a cartridge and tonearm is to find the
resonant frequency and try to land between 8 and 12 Hz. But the calculation can't be done if you don't know the effective mass of the tonearm or the compliance of the cartridge. No need to worry. Audiophiles got by for a long time without crunching these numbers. Some seasoned folks dismiss the exercise as a waste of time. JVC didn't list the effective mass of your tonearm, so there's no point in worrying about the equation. I just wanted to point it out because you asked.
I stand by my recommendation for the Ortofon M20FL. It's an unheard of giant killer. Check out this forum:
best cartridge under $500