My vote would be for the Summit Viper X4 or the Classic Viper. The Classic Viper is the same stand but made of steel so it wieghs 5lbs more. The Viper X4 weighs 20 lbs and the Classic weighs 25 lbs. They are very comfortable and can sit in them all day and least I can. I am not even sure they make the Classic Viper anymore but if you find one they usually run around ~$170 and the X4 runs ~$230

Good luck