I like PIVX not only for its privacy features but also its community. There's something endearing about its videos, even though I know some people may not like them. The "home-made" feel as opposed to "slick, corporate" is actually a positive. To me at least. Its Twitter and discussion groups are often updated and fairly active.

Another privacy coin that I like is Navcoin. It was quiet for some time, with the price at below 0.30 for weeks. Then it exploded and went to near $2.00. Among other things, its security doesn't utilise some new exotic encryption but plain vanilla - and proven - AES.

In addition to Bitcoin, I'm betting on these two also to be around in the foreseeable future.