Help: my phono preamp is blowing away my linestage

I recently was fortunate enough to acquire an Aesthetix Io Signature phono stage that has taken my system to a whole new level. But now I fear that my old Rogue 99 Magnum linestage is holding back the full capabilities of the Io.

I can't afford to buy an Aesthetix Callisto or Calypso, and indeed I spend most of my time listening to vinyl (but perhaps I'd listen to more CDs if I had a better linestage).

I figure I can spend up to about $2500 on a better linestage. Can I improve on the Rogue for this sum?

Patrick