For me it's a bit of a no-brainer - though admittedly I've never used MorphOS (not through choice - my Prometheus isn't supported so I can't run it).
From what I've heard MorphOS is pretty good - but flawed - with the EFIKA hardware, which is intrisically underpowered. And like it or not, it's not an Amiga, it's as much Amiga as a Linux box running Wine is running Windows.
Of course, I am biased - I run AOS 4.0 on my A4K and it runs very very nicely. I also run AOS 4.1 on my A1XEG4 and it absolutely flies. Hyperion have done an
incredibly good job with the OS IMHO - it's very fast, very stable, and the improvements under the hood are very important to a modern, serious OS.
But at the end of the day, there's one reason more than any other to buy a SAM 440 with AmigaOS 4.1 - you can get it. You can wait as long as you like for this or that OS running on whatever hardware, but until it's available
now you're not supporting anyone by waiting, and if there's anything the Amiga débacle has told us it's that waiting is probably a Bad Idea(tm). Ask anyone who was told new Amiga hardware was available Real Soon Now when the initial run of AOS 4 machines was sold out.
As I said, I've not used MorphOS. But I can say you won't be disappointed with AOS 4.1 on a SAM 440ep - and yes, it's expensive, but since when has the Amiga been a cheap hobby? And anyway - it's still a lot cheaper than the A500 was when it came out.
