Hi, I have an ergo and a 29.5 pound 19 month-old -- usually I just use a stroller, but I was wondering if any other buckle carriers or mei tais might work in this kind of situation? I use the ergo on public transportation sometimes... but we have a hard time walking more than a few blocks in the front carry, and I rarely try the back. My daughter got big fast -- 24 pounds at 6 months -- so we've never been very carrier-dependant, although I wish we could be. Are there any good soft carrier options for really big babies?