for senkos, the 5" black ones are my favorite
bear in mind that there is a difference between spinners
and spinnerbaits
spinners seem to catch every weed they go by but will catch all sorts of fish. spinnerbaits are decent at not catching the weeds but pretty much will just catch bass/pickerel/pike (at least in my experience).
floating rapalas are ok, but they're real light for their size, so they don't cast that great. couthdown rapalas are much heavier and nuetrally bouyant; they can be cast much further than the floating ones and i prefer the sinking action anyway.
