what are the other components in the chain? preamp,amp,speaker,SUB?
I have been using the same TT and cartridge with CA 540P for LP recording and with Norge 1000+WHF 10.2 for playback. I never felt of changing it as I have a costlier set up of Technics 1210...... I have compared their sound and I must say if you are determined to bring out improvements in Sq then only you will come out with minor difference, otherwise won't feel any difference. The combo that you are using is no doubt entry level audiophile, but it is almost same as more costlier set up
The final SQ also depends upon other thing
the source: all LPs don't sound the same, some with more surface noise some with moderate some dead silent, also how clean your record is that also matters
type: what genre you listen to? its not same for classical,jazz,pop, newer recordings or older or remastered LPs
So spare a few moments and ascertain why you want to spent money on cartridge, if its worn out or more than 1000 hrs old go for it, otherwise invest in other modes, for instance instead of a $400 cartridge of you add a 10" SUB of comparable price your listening experience will change completely. Nevertheless take a call accordingly. About VFM cart already a few Ortofon carts are mentioned, you can think of Denon DL 110, Ortofon 2M red, be careful and read about clearance issue with Pro-ject arm, remember this TT doesn't provide you the flexibility of adjusting the arm height so cartridge height is an issue