If you really want a light oak flavor, I'd go with the cubes personally. Chips will impart their flavor faster, however they tend to overemphasize the tannins if you let it sit for too long, whereas the cubes will impart a different flavor profile in the same amount of time - more vanilla and good stuff. Just my 2 cents.
Primary - 1 Gal JAOM, Belgian IPA, Pumpkin ale
Secondary - 5-way split Breakfast Imperial Stout, 2 Gal Traditional mead
Bottled - Kolsch, Pliny the Younger clone, Centennial Blonde, Alpine's Nelson clone, Apfelwein, QuicknDirty Cider
On deck - EdWort's Haus Pale