You can divide them into two categories. A new one (with a black wheel) was delivered to me. There are many more glowing testimonials for the original model (white wheel, rubber band on the side). The newest update is a major downgrade. A4tech WOP-49 ($145 in 2022) worked perfectly for seven years, but now this X-718FB mouse is a hassle. I'm going to have a look at Logitech and Bloody. offers benefits: In-game DPi switching (with LED indicator) + Price + 5 buttons + Third Shot button + Oscar (with all the repercussions: macros, button programming) + Dependable (Hurray still going strong after more than a year.) Cons: - The covering is NOT Soft Touch, but rather repulsively harsh - irritating to the touch Thick, non-elastic cord (gets in the way of productivity).