Sleek, I don't think anybody considers Elm a second string wood (or if they do they haven't done their homework).
My bias is obvious, but as I have said many times before, purple leaf plum is in my preferred bow wood over Osage, Yew, Ocean Spray and many others. I'll work any bow wood, and I love them all, but 9 times out of 10, plum is my go to when I need to make a choice. The reasons are many: outstanding compression and tension strength, very elastic, heats treats very very well, steams and bends into almost any profile, frequently grows pipe straight, the most workable wood I have ever used (loves a scraper, rasp, drawknife, or file and it sands very well), durable wood that is very light in the hand for its strength and durability (I've abused plum bows to no end, and they very, very rarely break), absolutely gorgeous with flecks op peach colored yellow, you can leave the bark on smaller staves for an awesome camo effect, it's diffuse porous and much less vulnerable to reductions in cast and set under humid conditions than most woods I've worked with. I am dead serious when I say that in my experience, plum has been a better bow wood than Osage and Yew.
But none of these are as important as the number 1 characteristic of plum wood: "bowyness" The wood loves turning into bows.
Gabe