I recommend the Duragloss Wet Look tire dressing, although at $10 a bottle it's too expensive IMO. I love the product, but I most likely will not buy it again. I just don't want to spend that much for tire dressing and I'm sure there are alternatives that will work almost as well for half the cost. I'm not a high shine/bling tire person, but this dressing looks great and lasts awhile, once the initial shine goes away. Tire dressings vary from tire to tire so while it may look good on your tires, it might not be to your liking on another set of tires. I rate the DG Wet Look dressing higher in my book because in my experience it has worked more consistently across the board of different tire manufacturers.
AA Extreme Tire shine is on my list of items to eventually try out and it gets plenty of good recommendations on here. I'd try that first before buying a more expensive dressing.