The following factors need to be considered:
your weight, and your weight relative to the ideal weight for your build.
foot posture and potential pronation problems.
any other foot issues (mortons foot, weak arches, width ....)
terrain you intend to run on
amount if running you untend to do.
Forget about one brand versus another, get yourself along to a specialist running shop and take advice. You don’t need to buy the dearest shoes in the shop but you will probably pay a premium for the advice. Remember, if they don’t fel right in the shop they don’t improve, the ideal shoe will be based on advice but it gas to feel right too.
People start running to get fit, my advice is to get to a basic fitness level before running! Brisk strenuous walks, building up to a few stretches of light jogging, is the best way to start. Forget what you’ve been capable of in the past, be honest aboutyour starting point. The worst thing to do is incur injuries by doing too much too soon. Look after your achilles tendons and calves............I wish I’d taken that advice back in the day when I was good at it!