You make a good point Kenny.
For me, the ideal portfolio is to do a bot of both. I have some props in Abu Dhabi that I have been holding for one year and they now attract a premium of 90%. I also like to flip on the occasion for cash flow as I am not mortgaging the longer term properties and I also think that some launches hgave far better short term prospects.

At the end of the day it is all about your personal strategy, risk management as well as a sound exit strategy.