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Unless you want a Windows RT tablet with cellular connection, skip the Lumia 2520 and get the Surface 2 instead.
The business-oriented Lenovo ThinkPad X1 has a few quirks, but is otherwise a very impressive business-oriented ultrabook with strong crossover potential.
The Lenovo ThinkPad T420 is as straight-up and unassuming as a business laptop can be on the surface, souped up with faster performance, long battery life, and a flexible selection of ports under the hood.
The Lenovo ThinkPad X220 packs in a new Intel Core i5 CPU and can run all day (depending on how you use it). With a 12.5-inch display, it's just a bit smaller than a 13-inch laptop, and it feels like an excellent compromise for frequent travelers.
The Oki B2520 MFP is a low-cost multifunction that ultimately fails for a variety of reasons, from its poorly implemented control panel to slow, low-quality output. There are better laser multifunctions that won't leave you scratching your head in confusion and frustration.