Guild Wars 2

I want to make a new character for PvE as well as for tPvP.
Problem is, I cannot decide whether it should be a ranger or a Mesmer.

Ranger seems very strong in tPvP at the moment, but will this remain so?
And then I already have 2 ranged classes, 1 thief with a shortbow and 1 grenadier engineer.

Mesmer seems a very interesting class, but can I play it?
When I look in the class forums no other class has so many build possibilities.
And then I have two problems with Mesmer as a class:
1. It is a slow class unless you equip a focus - but then you cannot take another off-hand weapon.
2. It seems difficult to get rid of conditions unless you take some traits (mantras), but then you sacrifice a lot of (shatter) damage.

So - what should I do?

Here is what i think you should do :

If you want to do both pve and pvp i prefer you should pick mesmer for dungeons in pve and still be good as pvp. Ranger is strong solo class but still lots of ranger haters out there even after sep patch.

But in the case you already have Engineer and Thief then i prefer you to pick Ranger because you can run dungeons with Engineer anytime you want ( i have engi too and he like master class ) and from what i read it seem you like Ranger more than Mesmer then why not pick Ranger ?

Ranger almost invincible in solo pve more deadly in pvp after patch and if you find your self a good group you can do any dungeons.