Eddie,
I was wondering how well the pneumatic Mansaver post driver would work. I have a SkiDril gas powered driver that I drive the posts and the 2 2/8" line posts with. It's heavy as heck, but it's a beast and even drives in my hard clay soil! It's really a two person job using it though. I made a platform that slides on my pallet forks that I stand on, holding the driver, while my wife stands up the post in the proper position and checks plumb as I do the driving. I once drove a section of 2"-SCH40 pipe 5 feet deep!
The 2-cycle engine has worked flawlessly and is extremely easy to start. I think the engine might be made by Tanaka. The throttle/choke/ignition switch is really crappy though, and subject to getting easily damaged. I've replaced it once with an ebay generic. Next time, I'll replace it with a used assembly from a Stihl weed wacker and add some guards to it.
The bomb would be if Milwaukee came out with a battery operated model.
Mansaver has different sizes, and mine is the smallest one they sell. Originally I thought about getting a bigger one to do pipe, and using the adapters for T-Posts, but decided that I wanted wood posts. I'm glad I did that because it gets heavy after using it all day long. The only real work with the Mansaver is carrying it from T-Post to T-Post, but it adds up over time.
In really hard soil, it can take a very long time to get a T-Post in the ground. Middle of August, and I'm questioning my sanity being out there, but it does get them in there, and what's really weird is that ten feet over, the next one might go in a lot easier. I never had a place where it was too hard and I couldn't get the T-Post in the ground.
I'm going to guess that using it on bigger pipe would be similar, but I really don't know.
I started out with the Red Brand 2x4 horse fence. It was the same price as Atwood's at Lowes, but Lowes gives me 10$ off for Military, so I bought them there. But then Lowes ran out of stock and couldn't get it for a very long time, and now that they have it again, their price is crazy higher then Atwood's. At one point, Atwood's was up to $340 a roll, which sucked, but then they came back down to $300. They used to sell OK Brand and now it's Stay Tuff. Tractor Supply is always more expensive then Atwood's, but if Atwood's was sold out, I'd buy a roll or two from them.
I cannot tell the difference between one brand over another. From the way they are wrapped, to the individual wires, they seem identical. I buy on price, and who has it in stock.
Here is another video of the Auger drilling in my soil. This area is iron ore that we drove over a lot in the last 20 years. It's super hard on the top, but then it gets better once I'm through the crust. Usually in really bad areas, I just have to dig down a little ways with my SDS MAX to where the Auger can do it's job. Of all the Posts that I put in, I only had to do one all the way by hand.