Hi Skelly ,
I think, as Martin suggested, that Corfu Escape is the best bet. Last year the Horizon only used TUI in Germany as it had been badly let down by Libra Holidays, in 2007, and it was trying to go down the "independently booked holidays" route.
You will not be disappointed if you book the Horizon, as it has a great position over looking over the beach, as seen by the web cam.
TerryW