@pkatsuleas, I agree Wilco "The Album" is far from their best pressing. A Ghost is Born is one awesome LP where they put extra effort into the vinyl version. Yankee Hotel Foxtrot and Sky Blue Sky, while more typical polished rock productions also are worth investing in the vinyl.
For the rarer gems:
The Autumn Defense - Circles is must have on vinyl for any Wilco fan. John & Pat's masterpiece with glorious harmonies, lyrics and tone reminiscent of Simon & Garfunkel, Crosby/Nash and Fairport Convention.
Nels Cline & Julian Lage - Rooms, acoustic guitar duo of avangarde jazz that will reward your attention with complex tunes masterfully played with extreme clarity.