I had a set of red diamonds on my Cleveland plywood for a while. I took them off because the tension felt too low and the sound was muddy. The low tension is across all the strings but especially on the G and D.
I'm used to plain gut G and D with spiro E and A, and the Red Diamonds are very different to that. They have a winding on every string, and they're made from cheaper gut.
I should have saved the unravelled string, but I got depressed and binned it.
The windings are a problem too- When I took the set off my bass, the G string unravelled.
Having said all that, they have a big sound!
Last week I put the E and A back on my bass with plain gut G and D (1 lenzner and 1 random gamut i think).
This is a much better combination to my ears.
So my conclusion is that the E and A make an acceptable complement to plain guts up top on my bass.
They are cheap for an all gut set though- good for testing the waters.