If you are thinking of buying a downtown condo unit that you will eventually sell, you need to think about liquidity. Unfortunately, rapid growth in the number of downtown units has also meant fierce competition among sellers in some projects. With so many sellers and ongoing competition from new units in projects like Spring, it can be difficult to sell. When thinking about liquidity, you need to start with the building. Since most buyers pick a building and then a unit, being in the wrong building can make it very difficult to sell. Since most units are similar, the market . . .