Rails users: What exception notification software do you use?

Question

I have seen Ryan Bates talk about exception_logger and exception notification. Are there any other good ones to consider? What do you like and dislike about these?

Also

Answer 1

I also use Hoptoad and it seems to functions ok after a slightly fiddly setup (but then I need to log rake exceptions too).

However, if I hadn't won a Hoptoad account, I'd prefer to use Exceptional as it has much better notification options (such as SMS)