Had two ZX summits back in the day, gen 1 on both, mix of carbide and flats. Were much better than stock at the time, great combo with the stock tracks, worked well on or off a trail. Very durable. Also ran them on the first Rev Summit, before moving to p-hounds. Simmons were very popular back then on Summits. One set of those gen 1's still run today on a buddy's classic RMK. Never tried the gen 3, of course. I'd try both, but that may not help answer your question.