Valve ideas for ported 915 J's

MOPAROFFICIAL said

I'll add that ferrea 5000 series valves are overpriced 'titanic' in weight peices of sh*t.
Get the best or use a different brand, si,pbm, etc

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I got a set of the Ferrea 6000 series for my 318 because they were going cheap, they look like good valves - nicely machined, undercut stems & swirl polished. Intakes weigh 123g & exhaust is 98g (2.02/1.6 with 11/32 stem). Are the 5000 series heavier or about the same?
I've heard that the engine pro valves were made by ferrea but not sure if that's true or not.
I used SI valves on my 265 - they are nice valves and priced better than the ferreas.