We propose an idealized model of pole-to-pole ocean dynamics designed as a testbed for eddy parameterizations across a range of horizontal scales. While computationally affordable, it is able to capture key metrics of the climate system. By comparing simulations at low, intermediate, and high horizontal resolution, we demonstrate its utility for evaluating eddy parameterizations, in terms of both their effect on the mean state and diagnosis of the unresolved eddy fluxes they aim to represent.