Gotta have that "lubricant"! You have got to buy some quality fish, not some swimming chicken, or ground up mermaid. It all comes down to the tuna. Olive oil definitely adds allot to any tuna sandwich, so if you've got some, try a splash of that. I like to buy my tuna already soaking in the olive oil, for it absorbs all fishy sensations and adds an excellent flavor. I am not at all a mayo fan, however after I drain all excess oil from the fish, I do add a couple of dollops of wasabi mayonnaise. This acts as an wonderful lube, and contributes a marvelous taste incomparable to that of regular mayonnaise. I have yet to experience the taste of a 45$ can, however I recommend this wild caught, dolphin safe, all natural, soaked in olive oil, solid light tuna, tonno, by genova. Wild caught tuna is generally less fatty, and contains more omega three do to the tuna's ability to maximize its insanely high metabolism.