On the Rayco the lower height of the infeed makes it much easier to feed. There are lift and crush switchs on both sides of the machine that makes feeding from either side easier.
The Morbark might be a little bit faster but for me it doesn't really change the speed of my jobs up any.
I always thought the feed table to be a bit high. There are no Rayco dealers in my area. Ive seen one stump grinder around. Much older style. I only have bandit and vermeer to compare to. Morbark winch power seems to be king. I also like their Morlift 150 loaders too.