Yes we (Fluxtronics) have made significant improvements over the other machines. While not perfected, for example we removed a leading edge hail damage dent .150" deep x .75" wide, .062" thick, which is estimated about 10% material shrinkage.
In fact you can view a few here...
While I am biased for advice I will give free demonstrations and can also put you in touch with an airline that owns one. Next week we will exhibit at the MRO in Dallas, TX: April 20-21.
I am an engineer (Fluxtronic) that formerly worked at Electroimpact and felt the technology needed...