I've found a font that I rather like for my project, but it only looks particularly nice if it is anti-aliased. In the help file, it says that anti-alias is slower than regular fonts...
My question is, how prominant is the slow-down? Is it safe to say, in today's world, that 99% of computers will not experience slow-down, because I love this font, but I'll find something else if its going to be too slow for a lot of people...
I think it's quite safe to say that anti-aliased fonts cause very little slowdown unless you draw them several times a second. Most often text is only drawn once, and usually while the game is paused, so I wouldn't worry about it. The warnings about slowdown are probably only relevant on computers slower than 200 MHz or so.