I thought Mobile Fidelity's claim to fame was half speed mastering, which was supposed to make it easier for the cutting head to deal with transients? I've got a few, and always thought they were OK. Back in the day they claimed to use JVC SuperVinyl, so surface noise was less pronounced. You still got the occasional pop and click. You can't make a record something it's not.
I believe I still have Fagan's Nightfly, Sticky Fingers, and Abbey Road. The first was recorded on the Mitsubishi digital system (if memory serves). The Stones record was amazing for the stuff you couldn't hear on the regular LP, but seemed to me to be 'too nice', and not sounding like I thought a Rolling Stones record should sound-- tiny and compressed. Nightfly was 'softer' than the CD (if that makes any sense). I guess you'd expect that. The Beatles record was too bass heavy, overall. On the upside, they came in a heavy plastic bag, with a nice inner sleeve; along with some promo material, telling you how great their product was, and thanking you for the purchase, etc.
I wouldn't say the sonics were as good as Sheffield Direct to Disc. Those, and the Umbrella label direct to discs (from Audio Technica), were always first rate--if you didn't mind the second tier program material/artists.