Next step from CAMBRIDGE AUDIO AZUR 651P phono ?

Hi everyone, just looking for some suggestions from folks who actually owned this budget phono preamp (or the previous 640P) and upgraded.

I just wish to go to "next step" that will provide a worthwhile step up in sound, not something 100X the price, if you know what I mean.

Table used is Marantz TT-15 with a Clearaudio Virtuoso MM cartridge.

Thanks if you can help.
My TT set-up is more budget than yours and I found a really nice improvement going to a Hagerman Bugle2 phono preamp. It is a little more expensive than the Cambridge Audio 640P but it also doesn't have a rumble filter that I'm kind of needing right now.

Another step up from the 640P that I've only read about but is a couple of hundred dollars more would be the Jasmine phono preamp 2 or the Jolida JD9 phono preamp.