I have owned the original Stingray and the Rouge Tempest Magnum.
I preferred the Stingray by a wide margin for it's clear, sweet, and ballsy sound. Excellent bass for a 40WPC tube integrated. Tube magic is there in spades, maybe it's because of the EL84 tubes, but I found it very involving to listen to. Put some NOS Mullards in for the preamp tubes, and it is truly exceptional. It punches well above it's price point. Only downside IMO was lack of a remote. The latest version does have a remote, but is more expensive, and has less power. I have not heard it, so I couldn't comment on the sonics of the Stingray II.
I thought the Rogue was ok, but the most "untubey" sounding tube component I have heard. It was exceptionally transparent, but almost solid state sounding and a bit sterile IMO.
I have not heard the Cary.