Nabbed him myself, at the Erie PA Target.
They had ONE case of the Leaders in stock and I got the only Sentinel in the store.
Almost had the Deluxes, but they couldn't find their location in the back room.
Voyagers are there, but the computer says they're still in a storage bin.
As for Sentinel himself? ROTF Optimus Prime has nothing on him in terms of transformation complexity. Everything has to be moved out of the way for another piece to move, then you have to move the first piece back. Then on top of that, it's panel, panel, panel, tab, tab, tab, tab, swivel, twist, snap, snap, snap, and it's ridiculous.
I couldn't even transform him the first two times I attempted it. The directions are pure crap.
The figure itself is quite nice in robot mode. The vehicle mode is nice if you don't use the gimmicks.
The transformation will make you want to punch a wall.
Walky over at Shortpacked! summed it up nicely.
http://www.shortpacked.com/2011/blog/daddoo/ Warning: Harsh language. (Though well earned.)
NOTE: Realize that I am not a perfect Christian, nor do I profess to be. I apologize if anyone's ever offended by me, I'm not perfect. Don't hold my posts and opinions against other Christians.