Depends on if you want something a little less flashy than what you're already driving. I would recommend the C4s for a daily driver simply because you have the Gallardo anytime you want it, and you don't even own a front engine car - so maybe that's how you like it.
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2005 Lotus Elise - Ardent Red
2006 Subaru STI - Black (Stage 4, i.e. too many mods to list.)
2007 Dodge Magnum R/T - Black (Wifey's)
2008 Toyota Tundra - Black