I got mine in December and I love it. It's worth every penny.
I wish I ordered extra mags like you did. The mags are rubber, the weight and center of gravity can be adjusted. Much better than using empty mags.
Other things I like:
Repeat shots. This helps a lot with shooting on the move and transitions. I don't have to modify my competition gun to get laser practice with repeat shots.
The laser doesn't lie and keeps you honest. You can fool yourself into thinking that the shot was good with regular dry-fire.
The take-up laser tells you how much you're moving the gun during draw, transitions and moving. Less-movement = faster times.
The green laser works at the range and can troubleshoot why shots are going where they do. Especially useful when practicing shooting around cover. Saves ammo.
The trigger is adjustable for location, over-travel, break location, take-up force, trigger break force, sear engagement. I have it adjusted very close to my gun.
The mags fit my Glock.
It accepts aftermarket sights.
If fits my holster.
The lasers can be aimed.
MOST IMPORTANT!!!
It is very quiet, the click is as loud as a computer mouse. My wife appreciates the lack of "clack-clack-click" of my Glock during dry-fire with a gun in the house.
The spot won't be on target if you aren't on the front sight so I don't look for the laser spot. I learned that pretty quick.