Bigger or Better?

As some of you know, DH and I are considering moving - not to a different city or anything, just to a different house. In fact, we are considering a couple of different options, namely, either selling what we have for a bigger home or putting an addition on the back of our current home. The market being what it is currently, now would be a great time to buy. Then again, we'd also have to sell what we have and it's definitely not a great time to sell. Wish us luck - it'll take at least a couple of months to make a decision (if we ever actually get around to deciding).