For training or practice, I'd take what you can find. Buy a few boxes or case too. Rounds are now in short supply or out of stock.
See www.cabelas.com www.doubletapammo.com www.shopcorbon.com www.ableammo.com www.grafs.com www.midwayusa.com www.natchezss.com
I'm not big on all the .40S&W now(I've owned 2 96D pistols in the past) but in short, I'd buy Hornady Critical Duty 175gr .40, the Corbon DPX, Ranger T T series 165gr JHP, the Speer Gold Dot 165gr JHP, the MagSafe SWAT, the PowRball .40, or the Golden Saber 165gr JHP bonded.
Hornady's Critical Duty is highly rated & did well in FBI protocol tests(wood/glass/fabric).