I heard Grip line was on its way out but Im bummed Zeroline is going too. The TM2 pures are too stiff and slick for me. With the temps rising and my hands getting sweatier as the day goes on, I dont want this. As far as durability goes, youre not gaining anything with TM2. If anything it is LESS durable and much easier to gouge than ZL. Both will taco for good if you hit a close tree on a drive but the ZL is holding up better for me when it comes to simply banging chains. Looks like my next purchase will be 4 or 5 ZL to keep me going for awhile. Not interested in the Mercy at all either.. The thing I like the most about Lat is the uniqueness of the molds and their ambition to come out with something no one is making. A new Aviar/Wizard? Really? We need another one of those on the market? How about the fairway driver weve all been waiting for?