Not sure what you're into for wood, but if bigger, and whacking at wedges is a prolonged event, you'll find the 3.5 pound head light, and the 26" handle short. The 4 pounder is better, but that 2" (that's what she said) on the handle makes a huge difference.
Bailey's is good to go, with decent prices and good customer service.
The Dayton's mentioned are Council axes. They work good, with a big flat back... in case it's windy out.
Nothing crazy. My parents are nearing 70 and slowing down significantly. They heat entirely with wood. Looking at falling somewhere between 15-20 oak trees a year for them in the 18"-24" range. I have cut with my dad my entire life, but I also know there are better ways to do things than the way we have always done it.
We have a hydraulic splitter and splitting mauls and steel wedges for that part. Most of the trees can be dropped in any direction, so most of the time I'd just be using the wedges to rescue a pinched bar or the occasional tree I need to fall in a certain direction.