Believe it or not, your local Lexus dealer may have some nice wheels for you. I have a 02 SC430 and recently bought the G-Spiders (a Lexus accessory) for mine.
Very nice looking. What did they cost you?
They initially wanted $350 each, but I ended up getting them mounted with trade-in of my old wheels for $1250. Fully warrantied by Lexus.
I did look at a lot of nice after market wheels, but found the staff at the local tire stores completely lacking of the fitment knowledge to allow me to make a good decison. My local Lexus service manager is also a memeber of this forum which may have influenced my decison. somewhat