Tarraga,
I am a current owner of both the Cary SLI-80 Signature Special Edition as well as the Almarro A-318B. I also owned in the past the Cayin A-50T and A-88T.
First off, the choice of the right amp depends very much on your speaker and the balance you seek.
I've done a write up on the Cary and the Almarro, which you can refer to at http://singaporehifi.blogspot.com
Some have said that the Cayin's are warm gentle and syruppy. Once you change the stock tubes, they are not and sound very open and linear, almost to the point of sounding solid-state like (in a good way). Between the A-50 and A-88, there is a lot of difference in terms of authority and power. On paper, the difference is not much, but the sheer weight of the A-88's transformers hint that there is more to it than meets the eye.
The Almarro can sound a bit bright and is not the neatest or most resolving at either frequency extremes. That being said, it is a highly emotional amp and has truly beautiful sound that is almost unheard of in its price range. In terms of power, I would be a bit more cautious. My room is about 10x12 feet and the Almarro is almost at the limits of its power driving my Focal Utopia Be (90db sensitivity, 8 Ohms).
The Cary is powerful and can sound slow and thick or fast and open depending on choice of tubes. It resolves well and is competent. Somehow though, it cannot touch the magic
midrange of the Almarro.
Value wise, the Cayin and Almarro are outstanding value propositions. The Cary less so. If you can obtain it, the Cayin VP-100 is a good alternative to the A-88 which is a real pain to bias. The A-50 is easily biased with externally accessible pots and test points.