TZ25/ ZS15

ok i sold my sx220 and just bought the zs15.  On p mode what is the best setting? i know the 220 had one.   I hate the fact that you can't access the pic you just took easily. You have to switch the switch and then view the pic... takes more time away from maybe another good shot to be taken... Also i guess i will have to get another battery and charger from amazon or somewhere as i don't like the fact it had to be charged inside the camera... not good when traveling.

also why is it that when you set the white balance to another setting it looks really bad on the LCD but no change in the pics?  eg) i put it on incandescent lighting and the screen looked blueish but the pics came out normal?

any tip on this camera for me?