The FELCO 6 is the better broad recommendation because its medium-hand fit, 195 mm published length, and 210 g published weight make a strong case for routine garden work without making it a miniature tool. FELCO publishes a 20 mm cutting diameter, forged aluminum handles, a hardened-steel blade, a micrometric adjustment mechanism, a wire-cutting notch, and replaceable parts. That is a focused set of basics for deadheading, pruning shrubs, and working through ordinary woody stems when the tool needs to stay comfortable through repeated cuts.
The FELCO 2 is not a lesser pruner. It is the right pick when its proportions are the point: FELCO lists it for large right hands, at 215 mm long and 251 g, with a 25 mm published cutting diameter. Its classic forged-aluminum handles, hardened-steel blade, adjustment system, sap groove, and replaceable parts suit a gardener who wants more reach and capacity from a full-size bypass pruner. For smaller or medium hands, though, the extra size is not automatically an upgrade. A pruner that opens and closes naturally is easier to control all afternoon.