[dotBen]

It depends on what you want to use it for.

DISQUS seem to be wanting to cater to the long tail of blogs, JSKit/Echo is looking to super-serve "pro publishers" (they power comments on a lot of news websites, etc)

I like what Echo is doing but if it is just for a small blog you might find it overkill, plus I believe it isn't free.

However, the feature set is interesting.

As it happens, I don't use either on my blog. I don't see much value add in the end.

[bdr]

DISQUS serves both: http://disqus.com/vip/