Supposedly you can get a set of pure nickel strings two gauges higher and they will bend like strings two guages lower: like twelves will bend as easily as tens. This, supposedly, is because the pure nickel strings are more elastic and also stay in tune better and last much longer.
Because they are pure nickel they are supposed to interact with the magnetic field differently than the nickel wound steel ones, whether our ears can perceive it or not I don't know, but supposedly it is perceptible.
It has also been suggested that the major string mfg companies switched to nickel plated after nickel became way more expensive during the sixties. There are two groups within the industry with explanations for the switch from pure nickel strings to nickel plated steel. One group revolves around the cost of nickel profit margin idea, and the other group revolves around the idea that players demanded a higher output, brighter string.
In any case, most companies offer pure nickel strings but don't advertize them in the magazines, etc.
I am just wondering if anybody uses pure nickel strings anymore and their opinion of them.