Dutchess and a Cougar GR7 springs to mind.
I would do it in what ever is the cheapest. But would say to stick with what you are used to. If I was to renew my SPA MEP IR I would go for some clapped out old duchess without a GPS fitted. These new machines are great don't get me wrong but you don't want to pay to have to learn how to fly them and to operate all the avionics.
My current steed is a steam instrument manual turbo prop with an old trimble GPS. Wanging it around on the standard 6 instruments with flip flop radios wouldn't bother me in the slightest. Stick in overlays and mucking about with an intergrated radio and LNAV stack would give me serious grief.