Nothing at all wrong with a Zeagle. I started with a Seaquest Jacket style when I was younger. After about 10 years or so with that, I got an Aqualung Patriot Back Inflate. Definitely felt much better with the Back Inflate over the Seaquest. Last year, I switched to a Zeagle Stiletto. In diving with the Zeagle, I discovered a few things.
Neither the Seaquest or Aqualung fit me as well. Both were OK, but not ideal. With the Zeagle, the shop had me try on a Medium, and quickly realized that I needed a different shoulder section. They swapped it out while I waited. So, the BC I dive with has a Medium waist & Large shoulder section. This fits me perfect.
I also found out the Aqualung was way more buoyant. I used just enough weight to keep me from being positive at the end of a dive. I was able to remove around 4 lbs with the Zeagle.
I like my gear being clean, and I always struggled with getting the interior of the bladder clean enough to my liking. There just wasn't a real good method to get it flushed right. The Zeagle BX coupler is just perfect. I pour some conditioner down the inflator hose, connect the hose, and flush. Can do this while I'm tending to my other gear. Additionally, I dive with an Octo-Z alternate air/inflator. It's nice to be able to quickly remove that from the BC, so I can store the Octo-Z with my regulator. Eliminates the possibility of getting water where it shouldn't be in the Octo-Z.
Some don't like the Ripcord weight system. I'm not one of those people. It takes more time to re-set, but this isn't really a big deal. I was able to re-set the rip cord system in only a couple of minutes on my first attempt. I like the fact that if needed, it dumps both pockets at the same time. I also like the fact that custom pockets are not required. In the unlikely event that I forget weights, I could still borrow weight from a buddy if needed.
If I dove doubles, the Stiletto wouldn't be what I need, but for singles, it does everything I need.
My daughter will be getting certified later this year. I'll most likely pick her up a Lazer. She's still got some growing to do, so I expect the size that fits her now won't be what she needs in a few years. With the Lazer, at least I could order just the components needed so the BC will grow with her.