You are comparing a 120 Amp unit (152) to an 80 Amp unit (1250). I would guess that you are looking at these as you probably have single phase input power......and the T-D unit will operate on single phase....while the larger Hypertherm unit, the PowerMax1650 is 3 phase only.
There are no "free lunches" when it comes to input power, which is directly related to output power! If you plan to run the T-D on single phase power....you may want to look at the Amp rating and wire sizes required for the 112 Amp input current draw at full output power. You wll need a 120 Amp/240 volt circuit and a pretty large input wire size to support this.
The Hypertherm 1250 will operate on single or three phase, any voltage from 190 volts to 600 volts....which makes it very adaptable to a lot of different input power sources. Hypertherm units are known for their reliability, and their long consumable life. The 1250 has shielded torch technology for all of its power ranges...and for cutting thin materials it uses Hypertherm's FineCut technology at power levels down to 30 Amps. Power supply and torch are made in USA by employee / owners of Hypertherm.
It may be better if you let us know what materials and thicknesses you plan to cut with this unit. It sounds more like you are just looking at a price range!
Best regards, Jim Colt