Hey Anagh
I read all, and BOBWED gave you the best possible answer a newcomer can receive, I'll try to explain why. I also believe that you just don't really know what the A3300 IS is capable of, it's not just a simple pocket camera but rather an advanced piece of jewelery, I will post a sample pic later, now let's start at the beginning
You said it will be your first camera and that you will learn.
That's good but keep in mind that the camera will degrade in time and also new technologies and features will be released in future, that's why you will upgrade or change your camera much sooner then you think.
Believe me I know because I made the same steps you wish to make.
It was 10 years ago and I bought my first camera, it was a Nikon 2Mpix for $1.200, yeah I bought the best because I wanted features, just like you.
What happen then is that the learning curve took some time and when I really knew how to take great photos my camera was outdated, and photos were not as sharp anymore because the lens movements degraded over time and I got photos out of focus. So the upgrade was not an option but I had to buy new camera and boy how angry I was I spent so much money for my first camera and then when I really needed a good camera I had no more money.
That was a huge fail.
That's why I'm 100% sure that the
first camera should not be a top one, but the
second one must be.
And look it this way, the two cameras you choose are big and you can't keep such camera in a pocket.
So if you first buy the Canon A3300 IS and later when you explore all the features and really learn how to make superb photos then you buy a top noch camera, it will be new and capable to make splendid pics, and you will still have a pocket camera to keep in the pocket or in your car to capture some good memories.
If you buy now the A3300 IS you will not throw away your money believe me, you will be glad to have such great pocket camera as a second camera, every photographer have a small second camera.
Don't forget that A3300 IS have a lot of features and is a great camera to learn, also it's capable to make high quality photos, here is one example just to know what we are talking about:
Click here for the
Canon A3300 IS Sample PhotoThe conclusion of the Steve's Digicams review:
The PowerShot A3300 IS performed well during our tests, with good shooting performance, pleasing image quality, and loads of easy to use exposure options. At just $179.99 US or less, it offers a great value for the size, features, and quality you receive.That's about your first camera.
To answer which one I'd choose from HX100V and SX30IS, the answer is simple:
large panoramic photos yes or
no.
This means that if you like to make very large panoramic photos (check Sony's site) than you should go for HX100V, but if you don't do this kind of photos then go for SX30IS which is a better camera and just lack that large panorama function.
What photos you will like to shot it's on you, you must explore a lot and you will see.
This is another point in favor of having a first (cheaper) camera, to understand photography better and to choose the right second (top notch) camera.
Also at the time of your second camera there will be new camera models, as I said before, new better models and with new features.
Good luck man and have a nice time, with whatever camera you will decide to buy I wish you have a lot of fun