Heres some thoughts on the Solaris Max and the Chameleon. I’ve had both. I know the new Long Shot version is longer geo and has a tougher down tube but I’m guessing it will feel very similar to the 2017 Solaris Max.
Having ridden both bikes I can say that they are both great and you wouldn’t be disappointed in either. The new Long Shot geo looks very similar to the Chameleons. I rode a large Solaris Max with a 60mm stem and now have a XL Chameleon with a 35mm stem. The Chameleon is still a bit longer but Cy is right about the 35mm stem improving the handling.
Both bikes feel quite similar on the trail, the solaris feels slightly softer but has more zing in its spring. If you drop the hammer on dry trails it just takes off like a rocket. The Chameleon is very forgiving and you could almost forget it is an aluminium frame. However, the lateral stiffness is better than the cotics which feels more stable overall but slightly less alive. On balance I prefered the feel of the cotic with 29er wheels and the SC with 27.5+. I rode both frames with the two different wheel sizes.
Another thing worth thinking about if you are choosing between these two bikes is the type of riding you like to do. If you keep your wheels on the ground and don’t do a lot of drop offs then the Solaris could be a good choice and It also climbs the best.
Where as, the Chameleon is easier to jump off stuff on because it has a shorter rear end. I noticed this a lot when I switched from a Sonder Transmitter with shortish stays to the Solaris with longer ones. The usual jumps and drop offs of my local trails felt different and less controlled with the longer Cotic. Moving to the Chameleon, with short stays again, made negotiating the same trail features feel more controlled.
I remember riding the flat twisty, bermy bit in the middle of Swinley on the Solaris and it felt vague. I did the same section 4 weeks latter on the Chameleon with the same exact parts except for a 35mm stem not a 60mm. I was amazed at how the Chameleon railed through the corners and how much control I had.
I don’t think I could recommend one frame over the other, they are both excellent. For my style of riding and my body shape the Chameleon is better for me but its not a better bike. Hope that makes some sort of sense.