Why don't you see if you can have the optional phono stage installed in the Unico? I think you could have bought one with the phono stage for an additional cost of what you're going to spend on an outboard phono stage.
In lieu of that, you ought to stick with tubes. The Bellari is a tube phono that retails for $250. There's one up on audiogon for $185.
The Antique Sound Labs Mini Phono is an overachiever. There's one on audiogon for $300. There's one listed on The Canuck Audio Mart for $160:
http://www.canuckaudiomart.com/details/94576-antique_sound_mini_phono/
In lieu of that, you ought to stick with tubes. The Bellari is a tube phono that retails for $250. There's one up on audiogon for $185.
The Antique Sound Labs Mini Phono is an overachiever. There's one on audiogon for $300. There's one listed on The Canuck Audio Mart for $160:
http://www.canuckaudiomart.com/details/94576-antique_sound_mini_phono/