Just as trying to address the specifics of Frank's original post:
But, without using it, the downsides, as I see them, are: the EVS does not have a digital read-out for RPMs;
True, I don't know of a decent turner on earth that uses the digital readout to plan their turning. But, if that's an important issue then the Oneway (all of them) comes up short there.
the headstock is fixed;
True, the motor is located low in the housing of the base to provide additional stability and smaller profile of the headstock. I have a PM3520a as well and the headstock moves but, I don't move it very often. However, if you want one machine to do it all then this may be a short coming as well.
the positioning of the bottom shelf makes getting close to the work awkward (e.g. can't put feet under and get close);
False, you can stand close enough to rub your (insert belly parts here) on the base. If you got any closer the wood would be in your shorts.
the controls are on the back side, one must reach over the work, IMHO this poses a possible safety hazard.
False, the speed control stalk can be positioned on the back at either end of the ways or, detached and moved to the front if you want.
The spindle center height was a bit high for my comfort but might be OK for a tall guy.
Subjective, if you are 5'5" or taller it shouldn't be a problem for anyone.
I didn't use it or even turn it on. But those factors alone would turn me to another brand and model.
Hmmm, I guess I want to turn on a lathe before I make a judgement about it.