I personally have played on one of these (and they do come without the bar)
http://www.mymybox.com/ddrmbsgxg3651.html
If you want the arcade feel, get that, I am not sure of its durability, it says it is built just like the arcades which is not entirely accurate. The arcade platform has the 4 sensors lining where where panle rests, the Blue Shark the sensors rest in the middle of the hole in platform and when you step on it, it pushes on a metal bracket down on the sensor, so the durability is questionable with the blue shark....BUT it feels like you are playing on an arcade platform.
If you want durability, I don't mean to sound like am mimicing Chad here, but cobalt flux is the way to go. Look at his, it has gone through all of us b-town people playing it at Japan Night, Fluxes will last a long time. But at the same time the feel of a flux is something you have get used to.
I personally suggest the Flux, but that is also cause I like pump songs and I can play Pump it Up stepmania on a flux.