I remembered the special shape of rubber strips on LGs. Instead of being a single piece, they made several perpendicular cuts on the strip, so several small rubber leaves instead of one big. This may also help to prevent noise, but it seems main benefit is coming from angled placement of strip on the roll.
Another thing, in the past, if I leave Neato out of dock for a day or so, it completely empties the battery, but now, for about 48 hours, its waiting somewhere in the home, and clicking start button still indicates some energy left in the unit, at least LCD screen alive and battery indicator displays a pixel-wide electricity left. This looks like a need for reconditioning, still waiting to full-empty full-charge.