Mars needs guitars was one of my favorite albums when I was in high school. I wore out the tape playing it in my car. It is a classic for fans of alternative bands from the eighties.
The best two tracks on the album are "Bittersweet" and "Wipeout". The rest of the material on this album is also strong, and lets the band display a wider array of musical talent than their first album (Stoneage Romeos). I saw the gurs live when they toured for this album (they actually opened for the Bangles, and I think I was one of three guru fans in the crowd), and all the songs sounded great live and loud. With that in mind, I recommend listening to this album on a loud stereo, preferably with the volume high, to get the full effect. It just doesn't sound the same on a walkman.
I highly recommend this album to any Hoodoo Guru fan if you don't already own it. For anyone not familiar with the band, they have a very guitar based garage band sound (similar to the Replacements). So, if you like the Replacements, the Alarm, REM, or the BoDeans, you will most likely also enjoy this band. Enjoy.