Play Sand is generally advised against in the industry. It's a silicate sand, which 1) does nothing to buffer the calcium in your tank, meaning you'll be spending money on supplements. 2) Silica-based sand is much more conducive to diatom blooms and algae growth, so you'll be cleaning the tank more often. Finally, many of these sands are know to release phosphates. You'll be fighting a constant battle against high nitrate and phosphate levels.
The only advantage to silica sand over aragonite is the cost. But in the long-run, play sand will cost you more.