how bad is iq on tz30 ? better to go with fz150 or fz200?

i doubt there is huge difference between the IQ of TZ and FZ series given the same size of the sensors and technology. The FZ200 particularly may have better and faster performance @ the tele end but other than that I would definitely recommend any TZ especially the new TZ40 with wifi, NFC, slow motion video record ability for just about 350 dollars.

The main reason why TZ is better overall because of how compact this camera is, it's a true pocketable camera that suits most of your jeans pockets, unlike FZ series that you need to carry it with a bag most of the time.