Niels (of libevent) is also pretty ridiculously talented; it's also hard to dispute that libevent has had more testing.
Libevent vs. libev really seems like a Linux vs. BSD kind of debate. I'd always choose libevent over libev, but you can apparently get a performance improvement (which is probably going to be marginal compared to other simple things you can do to speed up an evented program) by going with libev. And it looks like if you're doing clientside dev, like building a new browser or file transfer client, that libev is easier to embed.
Libevent vs. libev really seems like a Linux vs. BSD kind of debate. I'd always choose libevent over libev, but you can apparently get a performance improvement (which is probably going to be marginal compared to other simple things you can do to speed up an evented program) by going with libev. And it looks like if you're doing clientside dev, like building a new browser or file transfer client, that libev is easier to embed.