Here is a comparison of specifications:
Both cameras are good choices.
Which is better, depends upon what features you want/need.
The Sony is faster if you are taking photos as fast as it can.
It has a few "gee whiz" features such as "sweep pan" for making panorama photos.
You may want to buy a second battery for the Sony because those very thin batteries have a reputation for running down too quickly.
I suggest you read a full review on each camera and pick the one that sounds good to you.
CanonSD980IS vs SONY DSC-TX1
If u suggest any better cam (200-300) then these two, please post it.