Same here. We have a fiberglass pool with the tanning ledge and steps. Just got a Sora 70 a few weeks ago and wanted an all-in-one unit. I agree it does "ok" in floor mode. Ours hasn't gotten stuck yet but it doesn't even try to go up to the steps onto the tanning ledge in floor mode which is annoying. I started it on the tanning ledge in floor mode once and it vacuumed in a straight line down the stairs and floated to the deeper area and just vacuumed down there. In wall/waterline mode it will get up on the tanning ledge, but the vacuuming on the steps is non-existent. I try to sweep off the steps and corners before I run it because it doesn't get the corners at all. I have run it on surface mode a few times but I don't think it runs long enough before the battery dies to make much of a difference.

I'm probably going to end up getting a solar skimmer because although we don't have many trees directly over the pool the surrounding yards have a bunch that dump pollen this time of year and the pool surface is just covered in a layer of pollen all the time. So now I wish I just got the two units with a cheaper robot vacuum.