I have a boba 3g that I wore with my daughter. My son is 3 months now and I'm hearing all my friends rave about the Tula/Lillie. My question is for those that had both...is it worth the upgrade if you already had one??

My boba is comfortable, but I experience some back pain if I wear for extended times. And I do get sweaty, but I'm usually hot...

We live in a HOT place (Southern FL) so I'm wondering:

1) are the mesh carriers really much cooler than the regular styles?
2) is a lillie or a tula really that much more comfortable than a boba?

I've tried on a lillie and really liked it, but I didn't wear it long enough to know if it'd be that much better. A mesh one of these is like $130.