I have the least expensive Crony also and find it very satisfactory. There is a little more benefit to the ones with the readout that is at the bench. Also if you get the one that has the face on the unit make a cover for the face or you will burn it out with the blackpowder that is not completely burned; I know as I had to send mine back to be repaired. I made a couple of covers out of plexiglas that protect the face and light sensors. I think there is one made commercially but can't remember if it was from Crony. I understand that sometimes the sabots and the wads are able to also take out the unit. Personally I have not had that problem yet. An additional note: I have read about people rating powder performance by the amount of recoil. I dida comparison of Black Mag'3 and Tripple Seven and the recoil that I felt from the T7 was way worse than the BM3 but the velocity of the BM3 charge was actually higher on the Crony. A lot of the felt recoil is due to the light off characteristics of the powder. T7 is a "quick burn" type where as BM3 is more like real black and takes some time to build pressure so the "felt recoil" is much softer. T7 is a good short barrel powder and BM3 is better in longer barrels. By the way BM3 is still in merger talks with MDM and is presently not shipping any. It will be coming back on the market in the future but I have not been given a date as yet.