Titan seems to have come from nowhere to become a very popular poker room. I can understand why, the $500 bonus on offer is a pretty large one, I can't remember many bigger than this that were so easy to earn.
Others plus points:
The software is fast and good looking
There are plenty of games at popular stakes levels
Nice selection of different tournaments
On the downside:
The cash games are pretty tough, or at least they were for me. Maybe the big bonus hunters have moved in, or maybe I was playing out of my depth or just poorly. Others might not find the cash games so difficult of course.
Definitely give Titan a try if you like big bonuses and good tournaments.