Mandrus does make 18s and 19s. I'm not sure of those offsets, but there are several members on here with those sizes. Do a search for "Mandrus." These wheels look good in the sizes you mentioned; however, IMO they just don't look that stunning. These wheels completely transform once you go up a size.

The car rides excellent! Much better than stock even with the lower profile tires. I've got the shocks set at a 1/4 turn from full soft. There is some body role, but it is comfortable. Once you go firm though, the car handles awesome!