I have a couple of Crane Suzu bells that work nicely, I hadn't heard of Lion bells but I see they are well-regarded. Past few days I've been riding an older bike with no bell & on crowded MUPs it gets a bit tiresome to verbally announce so often. I often try to ride on roads vs the MUP but for the MUP I think a bell is more pleasant if not fool-proof. With all the noobs around, I try not to pass too fast (I'm not riding that fast anyway usually) & give max clearance (ie not passing 3+ wide). Lately with so many little kids esp on the path I think it's nice to be patient & if one wants to to do fast fitness rides then stay on the road. Actually frequent slowing/re-accelerating can be good training but many riders don't want to slow down.