After welding for years with a 1971 SA 200, I was surprised at how well the Pipe Pro 304 welds pipe. It made running stringers, hot pass, and caps easier for me. My old Lincoln is a good welding machine. Others that have welded with it said they liked the way it welded. But the Pipe Pro made welding pipe a little easier, FOR ME. It really will lay that stringer in. And my caps look better that those with my old reliable SA 200.
I am not crazy about the high speed it runs at when you use the AC power or weld at high amps. It is noisy, no doubt. But I can run 3/16 6010 at about 175 amps before it revs up to high speed. So it is not like it is screaming all the time.
I was also surprised at how well the Pipe Pro welds aluminum with a spool gun. Its does just as good a job as my MillerMatic 350P with the pulse on.
I have the optional external power hook up. That's plenty handy at my shop or jobsite that has 220v. Just plug in and weld all day without starting the engine. You're not going to get any quieter than that!
If all you are going to do is weld on pipelines or rigs, there are several good choices. But so far the Pipe Pro has been a good choice for me. It is very versatile.