Apologies if this is a bit basic, but, chickens are really specialised these days, probably more than any other kind of livestock. You could think of it as roughly four types:
1) Super egg producers, like your hybrids. Lots of eggs, no market for their meat because they'll be skinny and not meaty like customers expect.
2) Traditional utility, like your Maran. Not as many eggs, still no market for their meat because same as above, but reasonably worth eating your own if you are a carnivore.
3) Fashionably foodie traditional meat breed, like La Bresse. Fewer eggs, you might be able to market the meat if you put some creativity into it.
4) Super meat birds, which are all hybrids, and don't live long enough to lay, but are shaped like people expect a chicken to be shaped.
If you really just want to experiment with your own eggs, then probably you should just hatch ten and get rid of the cockerels the way you always have.