I have recently bought a Naxos CD with a selection of "Songs without words" by the hungarian pianist Peter Nagy.
I beleive he does a pretty decent job, and the selected pieces are really beautiful.
So, if you are looking for a not expensive recording, i recommend you this one.
PD: If you want the entire collection of SWW, it is also available by the same pianist (in 2 Cds i believe).