Can anyone recommend a portable parallel bar set up? I currently work out of a space where I cannot keep them up would need them to fold up to slide next to the wall. I have used the PowerMonkey one's but David Durante suggested I wait till they have new model or something else as they are very shaky. I found a bunch online, but I prefer the judgement of my peers with this topic if possible prior to making a decision. Also, they will primarily be used for the Hollow Back Press Dip progressions in a group class, nothing too dynamic for the moment.