I have had one w a tilting head for 9 months or so. I haven't used the tilting head yet but I would have used the sliding bed if it had one for stiles.
So I would put that higher on the list. But then again I can always buy an aftermarket solution for the sliding bed but I can't add a tilting head later.
Also a shaper without a power feeder wouldn't be using it to its full potential.
I'm not a shaper expert yet. Just made cab doors, locking miter joints, a template setup, and some shiplap so far. But the power feed is key even with manual feed tooling.