Normally...I would encourage anyone to consider this...but...hmm...
Vox, not to appear to attack that tactics you have used, but are you sure you want to throw in with us?
We tend not to be that contentious.
Development is slow, but steady, and I'm not sure we even care about impressing the general Amiga community anymore.
Also, we have our own issues (wifi being one of them).
Also, as our developers are not significantly compensated, we tend not to abuse them.
In fact, I'd consider a few to be friends.
So, if you can avoid the current level of contention, jump in.
Just speaking personally, but as a former OS4 user who pretty much has used MorphOS exclusively (in AmigaNG terms) for over a year now, I'm very satisfied with the software and the community. My main reason for the switch was my ageing A1XE was starting to behave flaky, and I couldn't really justify spending 3 grand on an X1000 to replace it, I already used MorphOs too so decided just to switch to that full time.
I find the pace of development of the OS much quicker (4 major OS revisions in a year is incredible), the third party software is generally more up to date, complete and bug-free, the whole experience just feels so much more finished and polished. Of course there are still some things to be done, wifi support being the major one (but as I use a mac mini jacked in via ethernet it doesn't bother me so much). I also find the community on Morphzone to be very welcoming and the developers much more open and friendly (I've never had a MorphOS core dev wish me to burn in flames for example, the feeling I got as an Os4 user was that of contempt from the developers mostly).
Just my 2c, but as another former OS4 convert, I have found the whole MorphOS experience to be very good. I still have my A1XE and it gets hooked up every now and then, most recently with the DOPUS and OWB released for OS4, but when my A1 finally bites the bullet I won't buy any more OS4 hardware.