I'm about your size and 73 years old. I bought this one off Amazon last year and really like it. The shape of the neck fits me much better than my old one, especially with a hoody on. I wear it anytime I'm on the boat. It has the increased buoyancy I was looking for. Well made and Money well spent. Don't forget it uses a larger CO2 cylinder for recharge, which is also available.

Bluestorm Gear Arcus 40 Automatic/Manual Inflatable PFD Life Jacket for Adults
Sold by: Bluestorm Gear