Benjamin Frith: He won Gold Medal and first prize in the Rubistein Competition 1989. He plays for NAXOS
Tony Macalpine: Guitar and Piano Virtuoso 
Vitalij Kuprij: His playing of Liszt´s Sonatas in B minor is the best ive heard.
Aguistin Anievas: The best with Chopin´s Etudes
Try Horwoitz live one (performed in Umich, private recording if u can get ur hands on), most awesome recording of ANY liszt sonata i have heard.
Also try Ernst Levy's release on Martson, volume 2, with Hammerklavier and oP.111, u won't be dissapointed, one of the best recording i have got.
Actually i have heard Tony Macapline's Chopin etude Op.10 No.4 several years back, I was shocked with his technique, and being not a professional pianist. He certainly pulls that off well.
Anievas is very well known for cheating while performing.
Bolet once told him after the recital 'Congrad on playing SOME of the notes.'
And after the Chopin competition, he wanted to release his live Op10 No1 etude, the person (who was a recording manager i think) didn't say a word, and then put on the Argerich Chopin competition live recording of 10/1, Anievas didn't say a word and left.
Anyway
Cyprien Katsaris
Sergio Fiorentino
Ernst Levy (the Forgotten genius of course, anxiosuly waiting for the new release on Martson)
Freddy Kempf (should have won the Tch if it wasn't all the dirty politics at that year)
Nikolai Petrov (fine fine pianist, with Gilels quality, one of the best Russian Pianist nowadays)
Anton Kuerti (fine beethoven, schubert interpretor)
Vladimir Krainev
Bolet (definately deserve more fame than he did, the most beautiful tune i have heard)
Annie Fisher
Enrico Pace (very fine Liszt interpretor)
Alexei Sultanov (Tch comp winner, was injuried and can't play anymore, some of the most eletrifying live recordings.)
Dino Ciani
Brunhoff
Raymond Lewenthal
Nelson Freire (alwasy being considered as Argerich's little buddy, which he had some really awesome recordings, like Godowsky Die Fledermaus and remain undiscovered)
Byron Janis
Other ones that once had fame and now forgotton:
Moiseiwitsch
Kapell
Friedman
Barere
Lipatti
Samuel Feinberg (some really aweosme Bach recordings)
Hofmann
Rachmaninoff
Michelangeli
Serkin