Okay Phil, let's gang up on Paul. My dad and I have been trapping muskrats in some local cattail marshes for over 40 years together. In those conditions conibears are seldom an option due to the "mucky" bottom and lack of runways leading to the houses. In one swamp alone we catch around 100 rats a year. Our FIRST trap of choice is the #1 LS. Then 1.5 LS. Coils are generally too strong for their delicate bones, even if used as drowning sets IMO.
Total rat catch for a couple decades ranged from 250 to 525 per year. Last few years has been way down at 150 to 200. We first set 3 milk crates full of #1's, then use up the 1.5's. 3 feet of tie-wire to extend the chain to the trap stakes, which are about 4 to 5 feet long and staked as far as the wire will reach from the landings or toilet station sets.
I catch most of my mink in #1 LS also. I would have to say if I had to pick only ONE style of trap for my rat and mink trapping, it would be the #1 LS, preferably the old Blake & Lambs, which also hold a coon as well as anything. If I'm setting a rat swamp, the #1's are top choice. I have some stop-loss models, but seldom need them as the water depth is perfect for drowning in most of the swamps where we fur trap.
I must add.... if a person is after muskrats and can only catch them in 110's, they need to learn the basics of using the footholds. It would take forever to trap rats without knowing how to catch them on slides, feedbeds, and toilet stations. I can go to a pond where there are no dens visible, but as long as there is rat sign they are on the stretchers... no conibears needed. So many guys around here say there are no rats. Odd how we still catch 150 or so without ever going farther than 15 miles from home. They are in all the creeks and can be picked off IF you know how to read sign and use the footholds.