There are so many types of beams I hadn't previously thought about before joining the CPF. From the sharp, tiny spots of some Pelicans, for example, to the wall of light from an L4 or other flooders.
As so often we respond: "It depends." What ever is best for the present task would be ideal. Since we can't always predict future lighting needs, perhaps a "thrower" may be the safest choice - if only one light can be used. While a spot beam is unpleasant to work with up close and forces one to sweep the light if searching, a thrower may illuminate your target or danger at a greater distance than a flood.
It's relatively easy to add a flood beam shaper to some throwers. I'm unsure if there reverse is true. So if only one light were to be had, I'd choose a thrower. Having a choice, I opt for a flood during my hikes (with a thrower in reserve) but am forced to use something with at least moderate throw at work.