Still haven't tried premium or mid-grade gas. From my research and what I've found on this forum, I doubt I want to bother. Also checked my area and mid-grade gas is about 10% more expensive and premium is actually 20% more.
Anyways, found a hilarious sticker and I just couldn't help myself. I also got my girlfriends' approval...didn't want her to hurt my SmurFITte or my chestnuts.
Here you go: