My new pleated type ultra fine filter upgrade is here! I dropped the E10 into the pool with the filter upgrade installed and I'm fairly impressed with what it picked up versus the standard mesh. The standard mesh did a good job but I think after about one more cleaning with the upgraded filter, my floor will be pretty much spotless and best of all, I didn't have to get out the pool vac and sweep it!
On a side note, since I have been turning the pool pump off, I haven't had any problem with the E10 getting twisted around the ladder going into the pool. The current while the pump is running really seems to push this thing around.
BTW from Wichita Chief's description above, the second bullet point isn't quite accurate. There is a piece that comes out of the bottom of the unit and a plastic piece that snaps in to switch from the standard basket to the upgraded basket. I don't think you can just drop in one or the other but the pieces snap in and come out pretty easily.