anyone have experience using a Gracie Stand? one of those stands that holds an acoustic in a playing position? i am looking into getting a few because i will be playing live eventually in a few months and have more than just one acoustic part for songs so i will need to switch in the middle of songs etc. just need to know if they are stable, because i'd be worried about them being Wobbly and last thing i need is to have my Taylor CE714 on a wobbly tower of acoustic Guitar Death!