Awe, I love catching them in mid-meow. Makes for a cute pic
Cat trees/towers are sweet. It looks like your cats love theirs. If you are a bit mechanically inclined, I would suggest making your own. My husband made one for Inky and it literally cost no more than $20. We got a heavy cardboard "form" tube that they use for making/molding concrete pillars; covered that with scrap carpeting (we cheated; his uncle installs carpets..) Then built the tree out of 2x4s, coated them in carpet, and used a tough rope to wraparound for a scratchy area. Adding a plywood, carpeted platform finished it off!