This is only my opinion, and means nothing, but I just think the ameraucanas are much, much prettier birds than the legbars. I have AMs, and a friend has CCL, and visually, at least to me, there is no comparison.
I have had chickens for 7 years now, but just in the last year started getting some purebreds to breed. Spend the money to get better birds as long as you do your homework and know that you are getting quality birds. I have a list of people waiting for me to start hatching from my AMs. I had 6 extra cockerels from my first straight run batch of chicks, and those sold in two days after posting. I've never sold any breed of rooster that fast.
I haven't made any profit, but I have broken even this year by selling eggs, chicks, and started birds. That's not bad for a hobby that I would be doing anyway