I have a 4 year old Platinum Legend that works well, but needs new tires. Rather than investing in tires and future repairs I was going to buy something new. Mine picks up about 20-30 acorns and is pretty much "clogged" at that point. Usually not many more in a day, but I like cleaning it out weekly (which is fine during non acorn drop season). Which of the proposed has the strongest suction and largest volume? Mine does not climb high enough to clean tile.