I've done both and there are plenty of opportunities. If you're going to specialize in maintenance, the skills you need aren't so much in any particular legacy

I've done both and there are plenty of opportunities. If you're going to specialize in maintenance, the skills you need aren't so much in any particular legacy technology (in fact, you need to be ready to dive in and work with whatever they have and act like you like it. :) What you really need, is skills for exploring a new code base, figuring out what it does, and how best to modify it. If you can do that, you're golden.