well lets look at bar and plate coolers, it's not exactly a highly complex piece of kit

quality aspects that are biggest to take into account are the grade of aluminium (maybe this will make a ball hair difference to the thermal charactristics, probably about as much as anodising... :startsshitfight: ) the end tank construction is probably the biggest and most important factor i'd look at as this is gonna determine how well it flows, as for the cores well bar and plate are never gonna flow like a good tube and fin set up be it a chinese jobby or a more expensive one.

but at a fraction of the price i don't think they are too bad