If I was donated a Mac or obtained one via a financially beneficial trade I would actually try MOS to be honest
This is pretty much the route I ran.
The "Ultimate C128" was up for auction or trade for a MacMini. I knew a friend of mine recently retired his PPC MacMini and still had it laying around so I asked if I could have it. Around about that time I found that MorphOS ran on the PPC MacMini. I would up giving the C128 a miss and installing MorphOS, instead. I haven't had a lot of time to dedicate to systems outside of the scope of my work, so it's kind-of languished since 2.7.
Now that 3.0 is released, the reduced pricing for MacMini, more support coming around the corner, and a little more free time on my hands, I will register MorphOS this summer and have a powerful Amiga-like system next to my 4000D.
I, for one, would not have wanted to drop more than about $250 total on a registered MacMini MorphOS system. I figured that I might break even on that system if I decided I didn't like MorphOS and to sell it. That's not a whole lot to spend for a hobby system, IMHO, but it is substantial for passing curiosity.