Here is my new Open Box M panel holder. It was well worth the weight and really works better for the way I like to paint than any of the other systems I have used... and I have used them all with the exception of the Glouchester. I started with a half Julian, then a full, a Guerilla box and most recently and for the longest, James Coulter and his Art Box and Panel system. I was looking at the EasyL Versa but the ones I have seen and felt were very heavy and kinda clunky.
The box is 12"x16", beautifully made and it smells like heaven. I have used it outdoor on 6 occasions and in the studio the same amount. It is comfortable in all setting.