Well this currently is my deck(for DT) :http://www.urban-rivals.com/presets/?id_preset=2397845&list
but I now have 29 217 clintz to spend,so should I buy 1 very strong card like Dorian and put it in my deck or should I buy 3 or 4 cards like Maurice,Nellie,Jeeves,Herman...what would you advice me to do and which cards (Uppers card)should I buy?

Hugo used to be a good budget card for newer players getting into DT, but now he has a 10 point penalty for any match that you win with him in your hand (even if you didn't use him). He isn't worth it at all anymore.

I'd definitely recommend getting a card like Nellie. Fantastic Uppers card. Cards like Oxen, Rubie, and Kazayan are also good, and Herman is Nellie with an extra star and 2 more damage.

This deck got me a DT win yesterday:
Herman, Nellie, Kazayan, Oxen, Rubie, Harold, Bianca and Jose Star.

The 2* cards are up to personal preference. Try it out if you wish.
Good luck!

Buy this except Beetenka instead of Kazayan until you can afford Kazayan. If you come up a little short on clintz sell your copy of Glenn as you won't be needing it. Herman is best for DT and Dorian is the best for elo.
http://www.urban-rivals.com/presets/?id_preset=2343079

Thank you all for your advices