IMO, the Federal Champion ammo is very weak and I no longer use it. The Federal American Eagle is better and their JHP seem to be okay. For range ammo, I like Fiocchi, S&B, Magtech, and even WWB better than the Federal. I have found the best defensive load to be Corbon DPX 115 +P except for my 3" barrel Kahr where I use the Gold Dot Short Barrel.
Here are some links to help you and I believe the top two are the best:

Natchez Shooters Supplies
SGAmmo.com | Family Owned and Operated, Stillwater Oklahoma
AMMOMAN.com
Ammunition To Go : Your one stop for all of your ammunition needs!
Georgia Arms - HANDGUN
AIM Surplus Home
USAammo: Pistol Ammo Rifle Ammo Best Prices in Stock
AmmoEngine: .270 Winchester, Instock For Sale Premium & Discount Ammunition, Ammo Deals
9mm Federal LE Tactical® HST®
Kyle's Gunshop: Ammo - 9mm Defense / Duty
Target Sports USA | Discount Ammunition Online | Ammo For Sale | Free Shipping Ammunition
Bulk Ammo
Ammunition To Go : Your one stop for all of your ammunition needs!
Ammunition, Magazines, Rifle Parts, Bulk Ammo and Rifle Accessories - Palmetto State Armory
gun-deals.com - User-Submitted Gun & Ammunition Deals
Jack Ross Ammunition - Made in the USA - Wholesale, Large and Small Quantities
J&G Sales
Cheap Ammo For Sale | In Stock Ammunition For Sale
Sportsman's Guide - Discount Hunting Gear, Discount Hunting Boots, Discount Shoes, Discount Ammunition, Discount Ammo, Discount Boots, Military Surplus, Outdoor Gear at The Sportsman's Guide
http://www.prestostore.com/cgi-bin/s...pig27&ct=65200
http://www.a1ammo.com/ammo-form/inde...TOKEN=38661149
http://www.kylesgunshop.com/store.ph...16&per=5&num=5
Category
http://www.the-armory.com/shopsite_s...html/ammo.html
http://www.grafs.com/retail/catalog/...y/categoryId/1
GlensOutdoors.com | Glen's Army Navy Store - Your Online Outdoor Store!

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USN Ret-M&P 9 M2, 9C, Shield 9