Taller Valve Covers with Roller Rockers

Covers without baffles suck because you usually end up having to deal with the extra oil coming up through vents and PCV valves causing smoke.
I'm not saying yours will do it, just that a lot of engines that are not baffled do.

IMO a decent set of fabbed covers work great and they are not expensive.
I run the 5 bolt LA style on my magnum and they work and seal just fine even using the magnum 10 bolt rubber gaskets.
If you want 10 bolt magnum specific covers, then look for those in a fabricated style.