I now have a Collins 6lb maul, 36" handle. The whole handle slides through the head so I haven't managed to break it yet, other plastic handle designs have the handle and head "glued" together, which lasts a cord or 3 for me... I had an 8lb maul but I split better with the 6lb'er
I'm tempted to try the 36" fiskars splitting axe though, I split on the ground and previous short handles would end up in my leg eventually... A lighter head can allow you to actually put more energy into the swing, like an aluminum bat vs. a solid wood one. I'm also tempted to try reducing the weight of my current maul by grinding off the back but maybe that will affect its balance?
If I can't split it with the maul after a few swings I set it aside and when I get a few stubborn chunks saved up, I just rip them in half with my 372. Cutting with the grain goes fast even in hard maple or oak.