Luis: I use a Ultimate, and just love its quick set-up and break-down. I cut a 1/2 in. plywood (over size)that I set on top of the end rails of the stand with 3/4 inch moulding glued and nailed on each side of the end rails. This locks the leggs in their open position, and renders the Ultimate into a very ridgid and stiff support, with no rock. I covered the top of the plywood with Velvet cloth (black) using contact cement used for regular
Formica (applied with a paint roller) painted the remainder of the board in black spray enamel. This gives a durable non slip surface for the Keyboard to set on.(the cloth I mean) I have hooks on the back for winding various cords and also cutouts for my Mike, earphones, and anything else you want at your fingertips while playing. Cost maybe $5.00 or $6.00. I also cut a pedal board that locks in between the leggs, for my espression pedal and foot pedal, but you didn't ask about that. Works great, and I know you would like the Ultimate......ARJ