I use the built-in MM phono pre-amp in my Rega Elicit-R. However, based on the review linked below, I would be buying this new Schiit Mani 2 if I needed a budget phono pre-amp. Seems like a tremendous value.
Schiit Mani 2
Schiit just released a successor to our favorite inexpensive phono pre-amp:
https://www.schiit.com/products/mani-4
Some of the highlights include significantly better SN ratio and distortion levels compared to Mani v.1 and the following:
What do you think? are the better specs, rumble filer or loading settings enough to get you to upgrade?