No, I think they distract to much from the body of the car. As you can see though, most people like it. Kinda like looking at a menu and not being able to make up your mind even though there is no right or wrong decision.
I also think it is too heavy for the car. Although it is a fairly big car, the 300's lines are very sleek, the long lines from front to back, the low profile of the roof line, etc.,. To further complicate things the 300 also has very impressive bold looks, the combination with contemporary long sleek lines and these bold aspects are what attracted many of us to buy the car. Some other cars in history had similar combinations, 50's Mercury for example. The aesthetics need to match the entire car in order for it to look right, thats why I like the SRT-8 wheels, they compliment the look of the car as opposed to overwhelming it. I do like the look of the wheels but it would be matched with a heavier looking vehicle like a some trucks or SUVs.
IF you like them - buy'em.
Personally, I think they "take-over" - that is to say, when you look at the car, you end up looking at the wheels (=Dubs/Tonka Toy wheels). I like Black Hemi's 20s (or footybat's) which complement the car's overall design and fill the wheel well better.