I recently purchased Lockdown and Brawn at Walmart recently, and I am quite happy with them.
Lockdown is a great figure and a fantastic homage to the Animated line. The robot mode and the vehicle mode are both reminiscent to Lockdown's animated appearance, but it has it's own movie styling to make it a unique figure. Lockdown's vehicle mode is actually one of my personal favorites from the entirety of transformers. It's sleek and menacing, but also gives you insight into Lockdown's persona. He has a transformation scheme that's a mix of both Animated and Movie standards, meaning that it's mainly simplistic with a few instances of advanced conversion. I haven't had any problems with the ball joints on his arms. They're tight enough to pose, but loose enough to move without struggling, so it's more than likely that many reviewers received figures with QC issues. The only thing I have against this figure is the hook he has as a hand. The hook itself is made out of soft rubber, which will likely become brittle in the coming years, and is positioned in a way where in vehicle mode it just dangles off the bottom of the car and in robot mode where the "mech alive" gimmick obstructs the posability of Lockdown's arm. It's not a perfect figure, but it's strengths outshine its weaknesses. All in all, I would highly recommend it; especially for Animated fans.
Brawn is also a figure I would recommend, although he falls a few short points below Lockdown. The thing that really stands out to me about Brawn is how much his color scheme changes from vehicle to robot mode. His vehicle mode is mainly a dull brown with a few black and gray accents, nothing too fancy. However, when he's in robot mode, his color scheme explodes into a multitude of different hues. He not only retains the colors he had in vehicle mode, but he also gains a main color of dark green, complemented by a metallic gold, metallic silver, and accented with red in certain places. I have to admit, I'm a big fan of his paint scheme. However, this isn't the only strong point of this figure. In fact, Brawn looks very strong overall, having a wide stature and an armored appearance. He is also very posable due to his transformation. Double jointed arms and knees as well as various swivels and a ball-jointed head can get some decent poses out of Brawl. However, the main drawback to Brawl is the fact that his vehicle mode kibble can really limit his posability in some places. Most of it is adjustable though, so he can still get away with a decent amount of poses. Brawn registers as an 8.5/10 on my scale.