If you plan to use the JVC deck for a while, I wouldn't spend alot on a cartridge until you can afford to get a good turntable and tonearm. You can get a Grado Prestige Black for around $40 which will sound quite decent with an inexpensive deck. When you upgrade to a better TT, arm and cartridge, you can will the JVC to a friend.
Cartridge suggestions
I'm anxious to get back into vinyl, but I have to take it a little slowly for now. I was just given an old JVC turntable. This is temporary. I was thinking about getting a new cartridge and then having it put on the new tonearm and turntable once I upgraded. I have my eye on the Rega 900 tonearm in the future or maybe the JMW Memorial and a Basis 2000 or one of the VPI's. I don't know very much about cartridges. The Benz Micro Glider has been suggested to me. Any suggestions on selecting a cartridge? I have an Audible Illusion Mod3A without the upgrade phono stage so I need a higher output cartridge. I feel I know just enough at this point to get myself into trouble by picking the wrong one.