I'm looking to place flooring tiles in our garage to improve my footing (our floor is so smooth it is slick) and dress up the look a little. Right now I am trying to decide between the Craftsman PVC tile and the Craftsman polypropylene tile. Both are on sale right now and the price per square foot is almost equal.
I've researched reviews on both tiles and understand the stats for both, but the store only has the PVC tiles on display.

The Poly tile is rigid, is 12x12, weighs almost a pound per tile, and is 1/2 inch thick.
The PVC tile is flexible, is 18x18, weighs over 2 1/2 pounds per tile, and is 1/4 in thick.
Does anyone have experience with one or both of these tiles?
Do the lighter colored tiles show tire marks? If so, are they relatively easy to clean?
Does the surface (of either) perform well with the jiffy stand (slides or digs in)?
Lastly, and slightly off-topic, does anyone know if the Harley tiles fit with other standard tiles? I am wondering if I could mix a few Harley tiles in with a garage full of less expensive tiles.
Yes, I know racedeck has an awesome product, but their price is more than I want to spend.
Thanks.