Hi Cesar,
If you found the FZ150 too bulky, I would definitely recommend TZ30 out of these two. If portability is one of your priorities, interchangeable lenses can become pain in the ass.
I would also consider Sony RX100 (it is a little bit out of your budget, though). It has not the zoom reach of the TZ30, but the better pixel count (20MP) makes it partly up. In addition, it shoots RAW and has MUCH better image quality, especially in low light. Also consider the Canon's S100 for the same reasons (cheaper option).


