As I own MP Grimlock I doubt I’ll ever get this SS86 version although I was tempted to order it as I prefer the shoulder alignment on this. (What were the MP designers thinking with that hunched look?) But I think the MP is a bit better aside from that. (Not by much though. If I didn’t own the MP I’d have got this.) I also own the Gigapower Grassor and I do plan on getting the SS86 Slag (subject to how he appears). I think Grassor is a great toy, (with a very silly name. Triceratops were vegetarians, don’t have know?) aside from that hollow dinosaur chin*, but I would like something that is a) Hasbro official, and b) in scale with MP Grimlock, which turns out to be around the same height as SS86 version. They should scale well with the other WFC figures. Grassor is a bit too big for that. I’m undecided if I’ll actually sell Grassor though. It’s a magnificent figure with great options and accessories. I don’t own any more of the MP style dinobots. I had planned on getting more Gigasaurs if I could find them for a decent price, but as it looks like there will be more SS86 on the way after Slag, I think I’ll wait for those. *I think they did it that way because both jaws form a double hood in robot mode. If the lower jaw formed a bib like other versions of slag it need not be hollow.