So I ended up ordering an 04 Z150 SL on Wednesday night. Well, the confirmation came and I realized I was getting an 05 All Mountain SL 150. I called Performance and told them the description was wrong and charged a Z150 and they waived shipping. Well - the AM SL came, and minus the QR20 dropouts, it is very nice. I got a hucker bike, but won't hit anything huge, so the machined crown and the QR drops shouldn't be an issue. Thing is, the adjustments on the AM seem bad ass. The Z150 has ECC5, but just cycling it off of the bike, it feels like crap. The rebound is too fast when it's wide open, and the first click has a bad top out. The AM has rebound on the bottom and has adjustment to 130mm by negative air. They are the same weight, until I add the axle, which is nearly 1/4 pound, believe it or not. The weight is no biggie. Thing is, the AM is to be sent back. I guess if I send the Z150, I should pay shipping, since I kept the wrong one. I guess the question is, for a trail bike, as the X2 is, should I keep the All Mountain or the Z150. My hub is convertible, so that is not an issue. Is QR20 that much stronger in terms of preventing flex, or shoud I just stick with the QR on the AM? I have roof racks that it will work on if I do. Help a brutha out. I want to mount one in the next few hours, but want it to be the right one, and don't want to lose a ton in shipping. The AM was $400 and the Z150 was $420.