Its interesting to me contrasting the three different aircraft used in the US to train helo pilots - basically doing the same thing. All 3 have glass cockpits, and IFR certified and all more or less in the same weight and HP range.
I still think the AF took the most efficient and pragmatic path - installing all new avionics and dynamic components in refurbished/0 time H-1 airframes that was completed under a total under the radar acquisition model since there were not "new aircraft". Time will tell.
Army TH-67's are being snatched up in droves for public/civ use.
Navy TH-73 6,283 LBS MGTOW, 1,000 SHP
Air Force TH-1H 10,500 LBS MGTOW, 1,600 SHP
Army UH-72 7,904 LBS MGTOW 1,476 SHP (2 x 738 SHP)