I have the GI Expert, though not in stainless.
I think it's a great gun. As I've posted in other threads, I am still breaking the gun in but am enjoying it so far. Its only hiccups were with the factory mags. Several failures to return to battery, sometimes multiples on one magazine. After picking up two Kimber mags (all I could find at my LGS that day) the failures disappeared. Switched back to the Para mags, and had more problems....still thinking about calling them....
It's accurate, well made, looks good, and is a lot of fun to shoot. As many of the reviews I read said, it's not truly a GI model because of its many upgrades, but it is a very good gun in its own right.
Hope you enjoy yours.