Hooverphonic. Their first album is their best, but you may like the subsequent, less guitar oriented albums. They also did a great rendition of "shake the disease". I would also recommend Curve. Again, their first (three) albums are the best, but "Come Clean", their fourth and still excellent album, is more closely related to what you describe. The vocals for Curve however, are icy and dark, not warm. You may also like Joydrop, but they are not in same league. Also look at Massive Attack's 'Teardrop' single and "Mezzanine".
