These are cool little figures. Alt modes are what you'd expect. Decent detailing, and they roll nicely on their wheels.
The otherwise ordinary alt modes are made more interesting by the addition of weapons.

WEAPONS
What I DIDN'T expect, and was pleasantly surprised to find, was that the alt modes have three ports for weapons, similar to the MechTech DOTM figures: one port on the roof, and one on each door. This creates some extra play potential. The only negative is that some of the ports are a little too loose to really hold the weapon pegs tightly. This will probably vary from figure to figure and port to port.

ANOTHER nice surprise was that the included weapons (which, by the way, are rubbery instead of stiff plastic) also have multiple ports and pegs on the weapons themselves, allowing them to be combined for even MORE extra play value. With half a dozen or more of these guys, you could cobble together some crazy mega-weapons. I'm not sure why they went with rubbery plastic; I think I would have preferred stiff plastic.

TRANSFORMATION
BB's transformation is very similar to the last few generations of Legend-class BBs: pull the legs down, swing the arms out, and swing the hood down over the head. Been there, done that, but it still works well. The addition of feet that fold is in a nice touch, though.
CJ's transformation, on the other hand, is more complex and interesting, which makes it more fun to transform.


BOT MODES
Both figures look good in bot mode. I find BB to be more aesthetically pleasing, but CJ has one major advantage: BALL JOINT ELBOWS, and bendable knees! This adds a lot to the poseability and play factor, and makes CJ a clear winner over BB.

Finally, a few more pics of bot modes to show how the weapons can be mixed and matched. On BB, the weapon ports on the doors end up on his arms, while on CJ the door ports end up on his legs.




FINAL ANALYSIS
CJ gets an A+: His interesting transformation and elbow and knee joints make him one of the most fun Legends class figures I own. I also like his sword weapon, and the fact that it has four pegs makes it a very versatile weapon.
BB gets a B-: No major complaints, but the transformation is too similar to other Legends-class BBs, and the fact that he still has stiff legs and arms after CJ demonstrated that elbows and knees are possible in Legends-class figures makes him less appealing. But still worth a purchase, IMO.
OVERALL, I'm excited about the potential of the Prime Cyberverse. The addition of weapons, with multiple ports on the figures and the ability to combine the weapons, adds a new dimension to this class. CJ's poseability, thanks to his jointed knees and elbows, makes me hopeful that we'll see the same thing in other figures of this class.