The max-flo is my 1st hpa tank. over all it works great! not many down sides (except for it wiggling). With the 47/3k tank i didnt get many shots, part of that contributing to my gun which runs at a very high psi. When i went to get chrono'd i noticed that fps flutuations were about -/+ 10 fps. I thought that was great after using c02. also, when i was playing the tank slips off your shoulder a little so a tank cover is recommended.
Overall, i think it is a great performer and i would recommended this to all players!