I've owned both the Audio Research PH3 SE and the Linn Linto. Both are excellent units. A lot depends on your application and your ancillary equipment. I feel you can certainly do worse than the AR, particularly if you go with MM. The AR does seem to have more setup flexibility.
If you decide to go with the Linn Arkiv, the Linto has a very seductive magic.
If you decide to go with the Linn Arkiv, the Linto has a very seductive magic.