If your phono stage can handle the 17D2, then it has enough gain to go with a slightly higher cartridge output easily. For the $2k budget stated, I'd recommend a ZYX R-100 Fuji(version with the 0.4mv output) for that JMW tonearm. It is every bit as good as a Shelter 901, but a better match for the JMW 9.
However, I always recommend that the other items on the analog unit be considered when planning an upgrade of this kind of expense. It is more beneficial to upgrade the deck or arm, than to get a cartridge that costs more than the deck/arm together. Remember that the deck/arm is providing the environment in which the cartridge has to perform. Improving this playing environment will yield higher levels of performance from your existing cartridge, than will buying a more expensive cartridge. While you may get smoother presentation or other benefits from upgrading the cartridge, the musical information retrieval will still be limited by the deck/arm, so you will not get full benefits from the more expensive cartridge.
That is why people upgrade their decks and arms. If you could get top megabuck performance with any entry-level deck/arm just by getting an expensive cartridge, then nobody would bother upgrading their decks/arms. Try to achieve an even balance in your analog components.