I also like submerged media, I put it in mesh bags, which makes it easy to remove and rinse or shake out. As to type, media is just a surface for beneficial bacteria to grow on, rings, lava rock, Scrubbies, the difference is minimal.
I find baffles to be restrictive, and of no use, especially as your expertise and evolution grows they just get in the way, and inhibit change.
You may at some point want to use plants or other types of filtration, and baffles get in the way.
For mechanical I use filter socks, and easy clean, easy maintenance choice.