This is my second post on this forum, first being for my first bike.

I had bought a Pulsar 180 in October 2013. Have clocked nearly 15k kms on it. Now, she is a bike. Best in the market for learners, affordable, and would take the beating. I had some pretty serious falls and near misses on this one, but she never let me get hurt, not even a minor scratch. Its like she protects me. In return, I take as much care of her, as much is possible for a student. I am very close to her. We have this ritual, for every 1000kms and for every time she would save my ass, i would pat her belly, as a gratitude, as respect. She, in this almost 2 years of ownership, never failed me.

Now, my dilemma. I always felt that she was underpowered for me, me being bulky (100+kgs). So, often I would think of upgrading to a more powerful bike.
This being my story so far.

I, one day, asked my dad to buy me a new laptop for my 21st birthday. He replied, son, there's a new launch by bajaj, how about that?
Now, he has always been a very strict dad, so i am not so frank with him. Back when I wanted a bike, 200ns to be precise, he refused saying it's not a VFM package, plus with so much power and equally inverse experience, you might just kill yourself.
So this offer of his was quite astonishing, and I didn't want to miss such opportunity. So I immediately agreed to it. Now the conversation goes on-
Papa- kitne ki aegi? (How much would it cost)
Me- Not much, just 1.2l, and after selling my pulsar, cost would be halved.
Papa- ok, doable, fine, granted.
Me- (mann ke ladoo ko chupaye) thanks dad.
In the end, he also mentioned that if there's any other bike in my mind, i should buy that one, as that I would have to own for the next 4 years. I agreed to it.

So, now, I have to finalise a bike by 14th of May.
My options are:

1. Duke 390- for the complete package.

2. Thunderbird 500- for the comfortable ride, but would like to know about the vibes.

3. CBR 250R- again comfortable ride, but i have heard that it is not good for city.

4. Continental GT- haven't heard anything from owners, looks killer.

Now, my typical ride daily is 40 kms. Half in city traffic, half on highway. I prefer a quick bike, with good low end torque. And after owning pulsar, I would like a bike which do not vibrates at 100, when I am doing my monthly rides. Comfort is obviously an important criteria. I haven't seen any ownership reviews for conti, don't know why.
I am 5'7", bit bulky. Please suggest me a bike, which would suit my build and my riding style.

Thank you all in advance