Not on those particular brands. I just bought a summit cobra for 219 from cabelas last fall. I love it. I did plenty of research before choosing a summit. Take a look at them. they are a little higher priced than some of the others but summit is a good quality stand. Quiet light and comfortable. I used it during gun season this year. I sat from sun up till sun down. Ohh, if you do get one be careful its easy to fall asleep in one. let me know how you make out.
Good luck
eddie