All of the imported chromoly axle shafts are pretty much the same except for the boxes they come in. They all come from the same foundries.
Use the company that provides the best customer service and warranty.
I tried to purchase rear Dana 44 axle shafts from Revolution Gear and Axle. They were able to ship the 5.38:1 gear sets I needed, but gave me the runaround for weeks on availability of axle shafts in a misguided attempt to keep me on the hook and dissuade me from purchasing elsewhere. That bullshit cost them a customer for life no matter how good they claim their products or their warranty may be. Fool me once, shame on them. Fool me twice, shame on me.
I purchased my rear chromoly axle shafts from Carbon Offroad. The boxes were at my doorstep in two days, assembled with bearings and wheel studs and ready to install. Later, when I converted to 5x5.5 manual hubs I needed longer wheel studs. Carbon Offroad had them to me the next day at no charge and sent me studs for the front wheels as well even though I had not purchased anything for my front axle from them. If I recall correctly, I have a 15 years warranty on the axle shafts. Plenty long enough; I will be an very old man when the warranty expires.
I am using Yukon front chromoly axle shafts. Why not Carbon Offroad? Because I am using Yukon manual hubs and I wanted related parts to be from the same manufacturer to avoid any finger pointing between companies in the event of a warranty claim. Yukon hubs, Yukon axle shafts.
I have had no issues with the products from either vendor.