You can't beat the price on a shield. Period.
I own 2x 9mm shields one for me, one for the GF. We both love them, we put trijicon HD night sights, gor a 4.5lbs trigger job, and I had talon grips put on hers and a stipple job put on mine. 1200 thru each pistol, fed it 5 different types of ammo, 3 low end FMJ range types and 2 types of defense loads.
Had about a 100-200rd break in period. After that I've had no malfunctions, I clean and lube after every shoot, or at least once a week if carrying.
Awesome pistols, the main key is to train with it. Don't shoot 100 rounds down it, give it one good cleaning and call yourself good and proficient with it. You're not, i didn't feel comfortable with it until about 500-600 rounds in. Now I fell in love.
HOWEVER, on duty I gave a glock 17, and back up glock 26, I will be getting a g43 for off duty because I want to stick to the same platform, glocks have different grip angles and obviously the safety aspect. I've caught myself a few times practicing and the shield was just different enough to trip me up. From what I'm used to from my glocks