I use both snap weights and lead core in different situations. It would be hard for me to use snap weights for the same presentations as lead core. The snap weight or another in-line weight like a bottom bouncer, reacts very quickly to any changes in speed or amount of line out. I favor them in most situations. When I want to present a bait or lure v e r y slowly, especially in very cold water, I turn to the lead core. I find that it reacts to changes more slowly and allows me to “sneak” a bait or lure far more precisely, at slower speeds, along a bottom contour, adjusting depth with varrying boat speed and small increments of line-out. The slow, gradual reation to changes is what I can’t duplicate with snap weights, bottom bouncers, in-line trolling weights, etc. In warmer water at faster speeds however, the snap weights really shine for me. I turn to bottom bouncers when the bottom is cluttered and snags are more likely. Unlike many anglers who use lead core throughout the water column, I tend to go with the snap weight when after suspended fish and use the core when targeting bottom relating fish when inches seem to make a big difference. I find that I can “tweak” the depth more precisely with lead core.