Don't bother...unless you are doing heavy framing,,,and want to do it from the comfort of home
It's more use as a walking stick (get one in your hand,and tell me i'm wrong) Also,avoid the fibreglass handled variety,with the square face...they look mega cool,but are not as easy to use,and are very damaging,on any substrate.
A good weight range,is 20 to 22oz ,very light and very heavy hammers,are useful for only a few jobs,but the above will do owt...mine has done 3/8ths pins,in a 1900's microscope slide box...and 3" cut clasps,in oak joists...so most things covered