Same! Owned a Blackhawk latest version with the best possible tubes Raven had in stock. I would choose Leben or Line Magnetic to pair with DeVore's over any Raven. Not dissing Raven, they make a very solid product.
I owned the Raven Blackhawk. Osprey is pretty much the same with slightly more power. I will take Leben any day of the week and twice a day on Sunday.