Old Orion HCCA's, PPI Art series (I liked the black ones especially with the circuit diagrams screened onto them that you could only see if the light was just right), PG MS and MPS amps, the all business look of the JL amps really appeals to me. I personally like an amp that is pretty basic looking. I don't want flashy, I want functionality, and usually if the amp if made to look really eye catching, the design and construction of the guts of the amp (you know, the part that matters) is left lacking.