I have kind of a different take on it based on economics.
If you plan to shoot a game with a 10 round restriction, go with the 10 round ones and use them at the range. You can get aftermarket 16 round Mecgars for $20 a pop for all other purposes. If you ever want the 10rd ones (like trying to make weight with an SP-01), you'll pay around $40 a piece for them - there's no cheaper aftermarket source.
Alternatively, you could get it with the 10 round magazines, sell them here for $35-40 each, and buy Mecgar 16 rd mags for $20 each. That would drop the price of your pistol purchase by $30-40.