What proffesion should I choose?

I have been playing guild wars for over 2 years and i have experience in all proffesions,but i have been playing on only 1 pve proffesion - and thats necromancer...i have unlocked almost all skills and enabled all roles including 55hp...and so

After some time i created Ritualist and i made a few moves...i realised its good farmer for easy preys and cool proffesion that can heal like monk and cast offencive spells like ellementalist and even summon spirits. I liked it and i didnt regreet

Now since i have tried 2 spell casters,i am shure i will create elementalist in feauture but before that i want to play some melee proffesion,and i am thinking between an Assasin and Dervish

Assasin seems like more fun proffesion to me since ive been playing it for all the time in pvp and i have most skills avevable to buy if i create pve one.I can protect my party by cripping opponents and somehow i could tank with critical defences..flashing blades..shroud of distress and other shadow arts and still deal some dmg...i could also use cool elite shadow form...and many others i have experience with..and i think this proffesion is improved alot by nightfall and will keep on improving in another expansion
The only problem is nobody wants an assasin in pve? dont u think so - some can be weak,bad tanks even bad dmg dealers.Good ones can even do solo

Dervishes r good in all cases and have really cool elites that can be similar to shadow form.and can variate with obsedian flesh and even solo.I dont have any critic on this proffesion but it might be boring,i dont know actually.Pve party is almost everytime managed by spell casters - dmg dealers in background almost totally offencive and tanks - where warrior or dervish could be handy...dervish is still less popular than warrior some say better than assasin but can be boring?

After all i heard about all these proffesions i found assasin most interesting but if i think harder,its dervish,the one made especially for pvp ...but assasins r more cool in my oppinion. What do you think?

I've worked with both professions and they're both pretty cool to play with. Neither of them are directly designed for tanking (although dervishes are slightly better suited to tanking if they really have no other option).

Personally, I prefer the assassin for the mobility. Once you get used to shadowstepping in and out of combat you're as close to invulnerable as GW allows you to be simply because you're not in one place long enough for most opponents to get a proper lock on you (as well as being able to kill or critically injure most enemy spellcasters in a matter of seconds).