libmemcache vs libmemcached

has anyone compared the two C client library: libmemcache
<http://people.freebsd.org/~seanc/libmemcache/> and libmemcached
<http://tangent.org/552/libmemcached.html>?  What are the pros and
cons for each of them?

--
Qiangning Hong
http://www.douban.com/people/hongqn/