I voted (win)UAE - because if I absolutely positively had to do something Amiga based these days it would likely be an emergency and thus require the immediacy of setting up WinUAE versus spending days tracking down old hardware of questionable reliability. Further, anything I could do on a "real" Amiga I could do faster (rendering, compiling, copying, playing back, etc.) under WinUAE with JIT enabled. Chipset-banging compatibility is of minimal concern, as I'd only do it for productivity (animation/video project, etc.).