I've found that my chest-rig i've had forever works best for me and is comfortable aswell. I dont find it crowded because everything on it has a purpose and i've used the same setup for so long. I wouldn't mind trying out a Battlebelt setup in the future.
I know some people who hardly change their loadouts because they are so comfortable with them. But you know what, why mess with success, if it works great for you, I say stick with it. Me on the other hand, I'm definitely a gear whore, it'd be weird if I didn't divorce my rig every year or so in favor of a newer one.