I utilize the Ultimate Apex Plus model kb stand specifically for concert stage performance.
http://ultimatesupport.com/apexplus.html I'm particualy pleased with it because it presents a most impressive professional looking (sleek) onstage visual appearance, and that it also provides more than adequate support for my 61 note Tyros keyboard, due to the fact that the new longer 18" tribars support the Tyros's full depth & width, extending all the way from the center rear of the kb all way out to its front left & right corners. Because of this, I experience little or no kb shake playing the 61 note keyboard from end to end. Another plus about the Apex stand is that its center colum doesn't obstruct any of the plugs, jacks, or the 'Yamaha Tyros' logo on the back of the keyboard. In addition, the color of the stand nicely complements the Tyros' silver & black color scheme.
The only quirky limitation of this stand I don't like is that it provides no support to the far upper left or upper right sections of the kb. For stage performance situations where the audience doesn't have free access to the kb, this poses no problem, but for bar type situations where the kb might be left vulnerably unattended in a location where reckless or drunk patrons might approach and subsequently lean or fall againest the keyboard , I would not recommend the Apex stand. For these venues I prefer the Quiklok Monolith or an X style stand. For concert or stage performance though, the Apex is my current #1 choice.
Scott