i use multiple ladder stands, and the sling seat is very comfortable. i have an attachment as well, that has the sling, and then a padded back for against the tree, like a backrest, i have yet to try it out, but it think it is going to be VERY comfortable. as for an all day treestand, go to your closest sporting goods store and just ask, i'm sure they can point you in a good direction. my store lets us sit in the stands before we buy. good luck.

these are good as well: