I guess you're saying that you're big enough without having your outline squared off and padded, huh?
Many of the mesh jackets, such as the Joe Rocket Phoenix and those that are similar (like the First Gear one I have) have sets or armor that can be removed, to give the jacket a little less stiffness at the elbows and shoulders.
If you already have something like the Joe Rocket Meteor, with a zip-out vest, you might want to stay with the Phoenix, since you should be able to use the vest in it and get a little more flexibility in Spring/Autumn. On the other hand, I didn't like the Phoenix's mesh, which was very soft and large, I liked the tighter weave and neater appearance of the First Gear.
So, like other garments, shopping around and trying things on is important.