I usually skate with Bronson bearings in their various price points. They usually last me between 4 to 6 months. I'm not the kind of skater to take my bearings apart and lube them, I just don't have the kit. I got a Dino and bought these to go with it. I've been super happy with them, I love that they have the built in spacers so I don't have to keep track of more tiny parts, and they have been amazing for me about a year later.
Now I'm going on my second summer with these bearings, and I can't feel them getting any slower. Thanks Zenit!