We had trouble finding a reliable Troub in my guild so I betrayed my Dirge. It was painful but I'm learning to like the Troub. We definitely have a few issues that could use some dev attention but all in all it's a rather fun class to play. We can dps well, feed power to guild members (thanks to a new SF AA choice) provide some powerful arcane and elemental wards, buff the heck out of casters, and everyone loves Upbeat Tempo, caster or not. And Victorious Concerto is a powerful tool in a raid and/or group, although a bit complicated to use correctly.
We even have a mez and a charm although they're so underpowered/short-duration that they're only good as a last resort when soloing, imho.
If I was you I suppose I'd check into what raiding guilds on your server were looking for. While it's true that dirges are the most sought-after, it's also true that there are likely many, many more dirges on a server than Troubs.