The article compares the results of three simpler methods of functional regional taxonomy to the results of the more advanced methods. All methods use daily travel-to-work flows provided by the 2001 census as a regionalisation criterion. Simpler methods rest in the application of primary-flow linkage in order to assign a basic spatial zone to a potential regional core, while more advanced method applies a relativised linkage measure that also takes into account a reverse flow between a pair of basic spatial zones. For comparisons the more advanced method approximates the size parameter used in simpler methods, which is however put into relation to a self-containment of a regional class. The article provides three comparisons of results and identifies main advantages and disadvantages of the two methodological approaches, concluding that the more advanced method provides geographically more relevant results.