The diagram for this 115V reciprocating saw shows two available switches--a black switch (for $21.95) and a red variable speed switch ($31.95). The trigger in my saw is black, while the switch inside the handle is white, but it varies the saw speed according to how far I depressed the trigger.

So I guess my question is, "Variable speed means I can run and lock any speed from 0 - 2300 SPM, like the switch I have in the saw that I need to replace, right?" I think I know the answer is yes, but I'm wondering because I use the variable speed feature a lot to finesse cuts through nails in wood in tight places, and would be stopping to straighten or change out a lot more bent blades if my saw ran at top speed the instant I hit the trigger.

I guess I have a second question: What sort of work do people use a one-speed reciprocating saw to do?

Thanks.