I've had more than my fair share of sake, and I certainly have my favourites, but it's rather difficult to recommend many because they either won't be available in Europe or I can't remember the details. I'll do some digging and get back to you later.
And, in response to User482, like a lot of things, appreciating sake requires a certain willingness to educate one's palate. My initial reactions to sake were much like yours. I can't imagine thinking that now. Context is very important too. One of the most memorable taste experiences of my life was the ice-cold local sake I was served in a very shallow glass by a Shinto priest in a shrine in Takayama on a snowy New Year's Day... there was incense in the crystal blue air, and the sound of the bell from a nearby Buddhist temple, and the sake was as clean as a mountain stream.
