The mixture out of female and male vocals, good riffs and nice hooks really did it for me. Their next album, Asylum, was different and took me a while to get used to, but after a while i also loved this one.
The good news for Senser fans is, after a six years hiatus they released a new album in 2004 called "SCHEMAtic". The main issue with the records was, apart from a lack of new ideas (it basically sounds exactly like "Stacked Up" is the awful, awful cover artwork.
Anyway, so here is my version of that cover, i hope that you like it, by clicking on the image you can get a higher resolution version of it.

The artwork is a 2D/3D compositing. Face from poser, texturing and rendering in Maya, compositing in Photoshop.
