Essbjörn Svenson Trio, all of their records are great, however Leucocyte is on a whole different plane; it has been my favourite record for the last 15 years. It's however quite moody, Tuesday Wonderland is far more accessible while also being extremely good.

Haven't listened to them in a while, but I also enjoyed listening to Tingvall Trio, though I remember them as being more atmospheric. There's also Vijay Iyer Trio, I specifically remember Accelerando well, but that's a long time ago.