Trans Oil or Engine Cooler Recommendation?

With limited feedback so far in another topic area, consensus seems to be that add'l oil coolers are a good idea for towing.
Does anyone have a specific Mfr they can recommend (engineered well for mounting and coinnections) for an engine or trans cooler?

Still better suited to the drivetrain section, no manufacturers/vendors of that sort of thing on XOC, this is more of a place for vendors of Xterra-specific items to potentially visit.

Anyway, Hayden, Derale, B&M, and Permacool are the big names. The "stacked plate" type is preferred over the tube/fin type, I forget which of the three offer the stacked-plate type.

Brent