Agree with that. Have owned a Scorp and 45, read about the others.
I think the 45 can be OK one-handed, though. Bore line is high, but weight is fine (1.15 Kg, which is about 2.5 lbs).
I’ve had a few of the regular Diana 5s. I’d really like a go with the Magnum. I think they might be quite nice.