I live in a 2 bed apt and the way the demographics are going(ie all the baby boomers of the 70/80s having babies now), I would go for a 3 bed rather than a 2 bed. Just my opinion though and I'm sure location would be a huge consideration.
I think good two bed houses in central locations will always be popular for young professionals looking for a city pad. If you get five plus years of avoiding commuting and renting while enjoying your own home you will be pretty happy regardless of <yawn> property market.