Valve amplifier choice

Hi Guys
I am considering making a switch from a Musical Fidelity Kw 500 to a lower powered all valve integrated or possibly a pre - power combination , i am due to move into a new house that has a smallish listening room 20ft x 12Ft , my speakers are Triangle Lyrr current model floor standing rated at 92db. Rega Dac as digital source , really fond of the smooth sound as in the past i have found cd sterile.
Although i enjoy the Kw 500 i was able to Listen to a Icon Audio integrated that really sounded nice , i also have had a crush on Macintosh amplifiers for some time now although not had a chance to audition due to living in Tasmania- Australia , there are very little in the way of local hifi outlets as it is a rural environment , i would like to get some suggestions for Icon Audio or macintosh valve integrated that would suit for a room of the above dimensions , I am a newbie valve amps with the Kw 500 being the closest i have come to with valves in the pre stage.

Thanks everyone.