For a long lasting, but potentially messy, shine, get the BLACK MAGIC TI (Titanium) series tire GEL wet... Don't use the foam. It's dumb. The spray is good (I use Black Magic Ti spray as well) as well, but it will last about half the time as the gel. The only problem with the gel is that it is a biatch to get off, and when it slings, it can get messy. You just have to get used to using it/know how much to use. That's my recommendation.
Spray
Gel
Not to mention that the car on their box is a 350Z
The gel makes the tires super wet/shiny. It's not an average little sparkle.