The Legend is definitely a pretty stunning ride. I've spent time on the Giant Glory, the Norco DH and Aurum, and the Legend. I've also had a short amount of time riding the Devinci Wilson and the Pivot Phoenix. The Legend is certainly my favorite of all of these bikes.
The Legend is very stable at speed, like any half decent DH bike should be. However, it is still very nimble and capable of quick line changes when necessary. This surprised me a bit, since I had expected the low and slack geometry to make it feel less nimble than the DH or the Glory, both of which have taller bottom brackets and steeper head angles. If anything, the Legend feels more nimble than either of those. Admittedly, this is possibly because the Legend always seems to be goading me to go faster, and it really comes to life when it is going fast. The low bottom bracket feels really planted in the corners, and the low center of gravity makes it very stable in the air. I also feel like the low stand-over height gives it an edge in the air compared to most other DH bikes I've been on; this thing is really fun to through around. The top tube sits so low that it always looks a bit funny to me how high the seatpost is raised up for a DH bike, just to get it to a reasonable height to be able to sit down occasionally.
The suspension is happy to eat up decent sized hits at speed or on steeps without bogging down, probably largely due to the initial rearward axle path. This also creates a fair amount of chain growth which contributes to great pedaling efficiency, but I have never really noticed much in the way of pedal feedback. The Legend really responds when you put the power down coming out of a corner or getting up to speed.
I do notice that there is a bit of a click as the suspension compresses from the clutch mechanism of the SRAM type 2 derailleur breaking free due to the chain growth (which was not as evident with the same derailleur on the Norco DH), but it is not noticeable while riding. Still, it bugs me a bit when I am just tooling around on the bike, and I may end up switching to a Saint derailleur and shifter next summer because of it.
All in all though, the Legend just kills it, and I'd highly recommend one if you get the chance to get your hands on one.