go lcd
If its less than 40" go lcd especially if its going to be used for other media.
Make you get the fastest response time (refresh) ie 3-5 milliseconds for example if you going to be watching sport.
New gen plasma {later this year?} will be much less power hungry but the above still applies in general from all I've read.
Big lcd's are expensive [>42" ] but less than 40 they are the rule and should be a better deal around