The ones I tried didn't have the neutral inoffensive taste of rice cakes - they actually tasted like lentils. Of course, I hate lentils. 
I think you mean
offensively neutral taste of rice cakes. I swear, rice cakes are the snack food of people who hate themselves, their lives, and everything involved in the sensation of taste. Or at least the ones they sell around here are. They're like cardboard's even more bland cousin. And I mean that very literally, as I have tasted cardboard. Least flavorful
anything I've ever tasted, rice cakes are,
and the texture is faintly horrific.
These things tasted pretty much dead on for 'em, just in a different shape and somewhat different texture. How the hell they managed that with something made mostly with potato starch and lentil powder I have no goddamn clue.
I kinda' want to find out, so I can strangle everyone that has knowledge of the black magics involved and ensure the stuff stops being sold.