Congratulations on your purchase! I looked at one of these on the Sig website a little while back, and it looked really nice. I'm currently using WWB from Wal-Mart, priced at a little under $19 for 100 rounds, for the range. If you do a web search, you can get a number of reports on testing for different types of 9 mm ammo. Due to cost, I only fire a few rounds of "other type" ammo per trip based on my evaluation of one of those reports. I'm currently half way through a box of JHP at the moment, but I can't remember the manufacturer at the moment. Please provide a range report after you get a chance to try it out.