Lcd....Smaller fuel bills..Less weight...Better if there is a window nearbye (Less reflected light). Differences between the two picture wise are now so close that it doesn't really notice too much and is heavily dependent on specific models.
If you tend to watch TV in the usual lounge situation. i.e lit then LCD would suit you better....If you are watching in a darkened home cinema environment then Plasma would be better.
Having fun choosing is the main thing....